Support `@staticmethod` protocol members and `@classmethod` protocol members

Get rid of this `todo_type!()` here: https://github.com/astral-sh/ruff/blob/a21cde8a5a5143db4fae5413869def2dd9f74c96/crates/ty_python_semantic/src/types/protocol_class.rs#L841-L847