Migrating to Pydantic 2

[questionlp]

• Migrate to Pydantic 2, which requires re-working of models, which includes:
  • Using bump-pydantic to migrate to Pydantic 2
  • Replacing conint and constr with Annotated[int, Path()] and Annotated[str, Path()] respectively in routes
  • Replacing strip_whitespace=True to string.strip() when passing in values to a method
• Adding titles via Path(title=) to path elements in routes where applicable
• Correct spelling errors