Invalid name generation when using python reserved keywords

[QuentinN42]

Fixes #88

To fix this issue, here is my proposition:

 class Author(pydantic.BaseModel):
+     model_config = pydantic.ConfigDict(
+        validate_by_alias=True,
+        validate_by_name=True,
+    )
     id: int
+    class_: str = pydantic.Field(
+        alias="class",
+    )
-    class: str

1. I'm replacing the class reserved keyword by class_.
2. I add validate_by_name to allow us to define the class using Author(class_=...).
3. I add validate_by_alias to allow JSON serde.

Changes overview

1. I've created a new file : internal/poet/reserved.go to append _ to reserved names.
2. I've modified internal/gen.go::pydanticNode to add model_config = pydantic.ConfigDict
3. I've modified internal/gen.go::fieldNode:

• If not reserved keyword, code unchanged.
• Else if using pydantic, add the _ and add pydantic.Field(...)
• Else if dataclasses, only add the _

4. Added tests

Questions / possible issues

1. To run the tests, I just clonned the repo and ran make test is it correct ?
2. I had to update all comment from sqlc v1.28.0 to sqlc v1.29.0 is this intended ?
3. The wasm sha256 changed, should I commit that ?
4. In internal/poet/reserved.go I hardcoded reservedKeywords we should double check it and check if we want to keep it like that.
5. Do you want me to add more tests ?