IFC-1348 Make templates for generics generics

[gmazoyer]

A generic cannot be created as an object until we decide which implementation of the generic should be used. This also applies to templates, a generic cannot be used to create an object when the instantiation happends through templating.

To avoid issues where a user would use a relationships pointing to a generic, templates for each implementation of the generic are now computed. This means that if we have a relationship setup like:

relationships:
- name: interfaces
  peer: DcimInterface
  optional: true
  cardinality: many
  kind: Component

With inheritance layout setup like:

DcimInterface
  |
  +--> DcimPhysicalInterface
  |
  +--> DcimVirtualInterface

We will generate 1 generic called TemplateDcimInterface and 2 templates called TemplateDcimPhysicalInterface and TemplateDcimVirtualInterface. Both templates will inherit from TemplateDcimInterface.

The relationship mentioned above, in the corresponding template, will be represented as:

relationships:
- name: interfaces
  peer: TemplateDcimInterface
  optional: true
  cardinality: many
  kind: Component

This will allow us to create and attach either TemplateDcimPhysicalInterface or TemplateDcimVirtualInterface to the template node.

[codspeed-hq]

CodSpeed Performance Report

Merging #5938 will not alter performance

_{Comparing gma-20250305-ifc1348 (3cf2578) with release-1.2 (5d9fbae)}

Summary

✅ 10 untouched benchmarks