Update IDL

[almarklein]

Update to the latest webgpu.idl, which may affect the API.

The eventual API changes are minimal this time.

• Texture has new props weight, height, depth_or_array_layers
• Buffer has new prop map_state

The IDL does move get_preferred_format to the global GPU object, but we need to have it on the canvas context, because we have different types of canvases. So in the end this did not result in a change 🤷

[Korijn]

LGTM!

[almarklein]

I'll merge this once I've made sure that PyGfx works with the update too.