feature: Support PEP 695 Type Parameter Syntax

[viccie30]

Is your feature request related to a problem? Please describe.

Since Python 3.12 it is possible to create compile-time only type aliases with the new type statement. Sadly, griffe does not appear to parse these new statements yet. It also does not seem to parse type parameters in class and function definitions.

Describe the solution you'd like

I would like for griffe to parse these new constructs.

Describe alternatives you've considered

N/A, I prefer to continue using mkdocstring instead of alternatives.

Additional context

N/A

[pawamoy]

Yup, it's time we support the new language features 🙂