[go_router_builder] Add support for @TypedGoRouteParameter to customize parameter names

[ValentinVignal]

Relates to flutter/flutter#112152

Add support for @TypedGoRouteParameter to customize parameter names

Needs #10792 to get merged first

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Code Review

This pull request introduces support for the @TypedGoRouteParameter annotation, allowing developers to customize the names of URL parameters in typed routes. The core change is a new uriName extension getter on FormalParameterElement which reads the custom name from the annotation or defaults to the kebab-case version of the field name. The code generator has been updated to use this new getter when constructing query parameters. The changes are well-tested with a new example and test cases. My feedback includes a suggestion to improve the readability of the code that extracts the annotation value.

[chunhtai]

Looking at the issue, is there a plan for custom converter?

[chunhtai]

should this be on the property declaration?

[ValentinVignal]

It was easier to put it in the parameter. But if you prefer, we can move it to the property instead. It will require a bit more code, though.

[ValentinVignal]

Looking at the issue, is there a plan for custom converter?

Yes, thank you for asking. It made me realise I forgot to put a comment on the PR.

1. Ultimately, this annotation could have 2 more methods :

String Function(T) encode;
T Function(String) decode;

but that will be for another PR. (Or it could be another annotation?)

2. We can introduce (in a future PR) a similar annotation for enum entries. Ex:

eum MyEnum {
  @GoRouterEnumEntry(name: 'customName1')
   entry1,
  @GoRouterEnumEntry(name: 'custom_name_2')
  entry2,
}

I'm not too proud of the name TypedGoRouteParameter, maybe you'd have a better name in mind?