Expand Native Asset Docs (#5808)

## Description

- Additional docs covering Native Assets including:
     - EVM vs FuelVM Assets
     - What `AssetId` is
     - How to use `AssetId`
     - What `SubId` is
     - What the default asset is
     - How to mint coins
     - How to burn coins
     - How to transfer coins
     - How to check contract balances
     - How to check transaction values
     - How to receive assets in contracts
     - ERC-20 equivalent example
     - ERC-1155 equivalent example
- The Liquidity Pool example has been moved to its own section in
examples

These changes were originally included in
#5806 but have been pulled out into
a separate PR

## Checklist

- [x] I have linked to any relevant issues.
- [x] I have commented my code, particularly in hard-to-understand
areas.
- [x] I have updated the documentation where relevant (API docs, the
reference, and the Sway book).
- [x] If my change requires substantial documentation changes, I have
[requested support from the DevRel
team](https://github.com/FuelLabs/devrel-requests/issues/new/choose)
- [x] I have added tests that prove my fix is effective or that my
feature works.
- [x] I have added (or requested a maintainer to add) the necessary
`Breaking*` or `New Feature` labels where relevant.
- [x] I have done my best to ensure that my PR adheres to [the Fuel Labs
Code Review
Standards](https://github.com/FuelLabs/rfcs/blob/master/text/code-standards/external-contributors.md).
- [x] I have requested a review from the relevant team or maintainers.

---------

Co-authored-by: K1-R1 <77465250+K1-R1@users.noreply.github.com>

Author: bitzoic

docs/book/spell-check-custom-words.txt

@@ -187,4 +187,5 @@ arity
 tuple's
 unary
 SRC
-DEX
+DEX
+SubId

docs/book/src/SUMMARY.md

@@ -11,6 +11,7 @@
   - [Counter](./examples/counter.md)
   - [`FizzBuzz`](./examples/fizzbuzz.md)
   - [Wallet Smart Contract](./examples/wallet_smart_contract.md)
+  - [Liquidity Pool](./examples/liquidity_pool.md)
 - [Program Types](./sway-program-types/index.md)
   - [Contracts](./sway-program-types/smart_contracts.md)
   - [Libraries](./sway-program-types/libraries.md)