Tasks for next Blender version update

[scurest]

The Blender importer currently supports Blender 2.82. This will eventually have to be updated (probably for 4.0 when mesh.vertex_colors is deprecated).

List of things to update when that happens

• [ ] Use removeprefix/removesuffix available in new Python version (0625550).
• [ ] Use POINT domain color attribute for vertex colors. Also remember to use color_srgb with new color attribute API.
• [ ] Use pixels.foreach_set for image data.
• [ ] Use new "Mirror" texture extension mode when textures are flipped in both directions.
• [ ] Use new shader nodes (MixRGB, etc).