Replace @classmethod with @staticmethod?

[heuer]

Several classes (Renderer, Allocator, …) have a factory function which does not use the passed cls argument at all, they can be decorated with @staticmethod without any difference.

Example:

pywlroots/wlroots/allocator.py

Line 21 in b38b6ce

@classmethod

    @classmethod
    def autocreate(cls, backend: Backend, renderer: Renderer) -> Allocator:
        """Creates the adequate allocator given a backend and a renderer."""
        ret = lib.wlr_allocator_autocreate(backend._ptr, renderer._ptr)
        if not ret:
            raise RuntimeError("Unable to create an allocator.")
        return Allocator(ret)

[flacjacket]

This is a good point, happy to accept a PR for this, otherwise I can change these as I see them.

[heuer]

I'll provide a PR