chore!: Add associated type Node to HugrView

[lmondada]

closes #1927

Yey, this is a fun one 🫠

This makes HugrView general over the Node type. Note that HugrMut and all operations that mutate hugrs still only act on the node type Node.

I suggest once this is merged in that we add a .git-blame-ignore-revs file to simplify future git blames:

# Commits to be ignored by git blame

# Add Node associated type to HugrView (large mechanical change)
<commit of this PR on main>

BREAKING CHANGE: HugrView now has a Node associated type. Make your code generic over the node type where you can, replacing Node with H::Node. Otherwise, use the type bound H: HugrView<Node = Node>.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.67%. Comparing base (929edb6) to head (1a24227).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1932      +/-   ##
==========================================
- Coverage   83.71%   83.67%   -0.04%     
==========================================
  Files         196      196              
  Lines       37533    37168     -365     
  Branches    34346    33981     -365     
==========================================
- Hits        31422    31102     -320     
+ Misses       4328     4285      -43     
+ Partials     1783     1781       -2     

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[hugrbot]

This PR contains breaking changes to the public Rust API.

cargo-semver-checks summary

--- failure method_requires_different_generic_type_params: method now requires a different number of generic type parameters ---

Description:
A method now requires a different number of generic type parameters than it used to. Uses of this method that supplied the previous number of generic types will be broken.
      ref: https://doc.rust-lang.org/reference/items/generics.html
     impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.39.0/src/lints/method_requires_different_generic_type_params.ron

Failed in:
hugr_core::hugr::views::sibling_subgraph::SiblingSubgraph::try_from_nodes_with_checker takes 0 generic types instead of 1, in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-core/src/hugr/views/sibling_subgraph.rs:234
hugr_core::hugr::views::SiblingSubgraph::try_from_nodes_with_checker takes 0 generic types instead of 1, in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-core/src/hugr/views/sibling_subgraph.rs:234

--- failure trait_associated_type_added: non-sealed public trait added associated type without default value ---

Description:
A non-sealed trait has gained an associated type without a default value, which breaks downstream implementations of the trait
      ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-item-no-default
     impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.39.0/src/lints/trait_associated_type_added.ron

Failed in:
trait associated type hugr_core::hugr::internal::HugrInternals::Node in file /home/runner/work/hugr/hugr/PR_BRANCH/hugr-core/src/hugr/internal.rs:30

--- failure trait_method_added: pub trait method added ---

Description:
A non-sealed public trait added a new method without a default implementation, which breaks downstream implementations of the trait
      ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-item-no-default
     impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.39.0/src/lints/trait_method_added.ron

Failed in:
trait method hugr_core::hugr::internal::HugrInternals::to_pg_index in file /home/runner/work/hugr/hugr/PR_BRANCH/hugr-core/src/hugr/internal.rs:42
trait method hugr_core::hugr::internal::HugrInternals::to_node in file /home/runner/work/hugr/hugr/PR_BRANCH/hugr-core/src/hugr/internal.rs:45

--- failure trait_requires_more_generic_type_params: trait now requires more generic type parameters ---

Description:
A trait now requires more generic type parameters than it used to. Uses of this trait that supplied the previously-required number of generic types will be broken. To fix this, consider supplying default values for newly-added generic types.
      ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-parameter-no-default
     impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.39.0/src/lints/trait_requires_more_generic_type_params.ron

Failed in:
trait HugrNodeRef (0 -> 1 required generic types) in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-core/src/hugr/views/petgraph.rs:187

--- failure type_requires_more_generic_type_params: type now requires more generic type parameters ---

Description:
A type now requires more generic type parameters than it used to. Uses of this type that supplied the previously-required number of generic types will be broken. To fix this, consider supplying default values for newly-added generic types.
      ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-parameter-no-default
     impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.39.0/src/lints/type_requires_more_generic_type_params.ron

Failed in:
Struct HugrNodeRef (0 -> 1 required generic types) in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-core/src/hugr/views/petgraph.rs:187

--- failure function_requires_different_generic_type_params: function now requires a different number of generic type parameters ---

Description:
A function now requires a different number of generic type parameters than it used to. Uses of this function that supplied the previous number of generic types will be broken.
      ref: https://doc.rust-lang.org/reference/items/generics.html
     impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.39.0/src/lints/function_requires_different_generic_type_params.ron

Failed in:
function ensure_no_nonlocal_edges (0 -> 1 generic types) in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-passes/src/non_local.rs:32
function ensure_no_nonlocal_edges (0 -> 1 generic types) in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-passes/src/non_local.rs:32
function nonlocal_edges (0 -> 1 generic types) in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-passes/src/non_local.rs:14
function nonlocal_edges (0 -> 1 generic types) in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-passes/src/non_local.rs:14
function partial_from_const (1 -> 2 generic types) in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-passes/src/dataflow.rs:93

--- failure trait_associated_type_added: non-sealed public trait added associated type without default value ---

Description:
A non-sealed trait has gained an associated type without a default value, which breaks downstream implementations of the trait
      ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-item-no-default
     impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.39.0/src/lints/trait_associated_type_added.ron

Failed in:
trait associated type hugr_passes::dataflow::ConstLoader::Node in file /home/runner/work/hugr/hugr/PR_BRANCH/hugr-passes/src/dataflow.rs:63

--- failure trait_requires_more_generic_type_params: trait now requires more generic type parameters ---

Description:
A trait now requires more generic type parameters than it used to. Uses of this trait that supplied the previously-required number of generic types will be broken. To fix this, consider supplying default values for newly-added generic types.
      ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-parameter-no-default
     impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.39.0/src/lints/trait_requires_more_generic_type_params.ron

Failed in:
trait NonLocalEdgesError (0 -> 1 required generic types) in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-passes/src/non_local.rs:26
trait ConstLocation (0 -> 1 required generic types) in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-passes/src/dataflow.rs:44

--- failure type_requires_more_generic_type_params: type now requires more generic type parameters ---

Description:
A type now requires more generic type parameters than it used to. Uses of this type that supplied the previously-required number of generic types will be broken. To fix this, consider supplying default values for newly-added generic types.
      ref: https://doc.rust-lang.org/cargo/reference/semver.html#trait-new-parameter-no-default
     impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.39.0/src/lints/type_requires_more_generic_type_params.ron

Failed in:
Enum NonLocalEdgesError (0 -> 1 required generic types) in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-passes/src/non_local.rs:26
Enum ConstLocation (0 -> 1 required generic types) in /home/runner/work/hugr/hugr/PR_BRANCH/hugr-passes/src/dataflow.rs:44