Port Texture to C code

[MightyJosip]

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This PR converts pygame._sdl2.video.Texture to C code. It has the implementation of all the Texture methods and attributes. It doesn't have docs/type hints/tests or stuff like that.

Leaving this as the draft atm, because it depends on #3317 and #3327, pushing just for the internal testing purposes

TODO: Check Rect values for draw/update