Provide docstrings for all functions

[cool-RR]

When I run help(win32gui.MoveWindow) I get nothing. Would be helpful to get a docstring showing at least the signature of the function.

[Avasam]

I shall add. It's possible to write docstrings in a standard way that __signature__ and __tex_signature__ can be automatically generated when introspecting with inspect.signature. As it is, introspection tools have no idea about c extension methods signatures.

This can be done either by adding the support in AutoDuck, since a lot of functions already use comments to generate that information. See:

• https://peps.python.org/pep-0362/
• https://stackoverflow.com/a/25847066
• https://stackoverflow.com/a/41245451

Or migrating to the Argument Clinic

This would be quite helpful for #1913 as it would allow better introspection. Making stubs more accurate and require less maintenance.