Add test for texture creation to check for expected & unexpected errors

[Wumpf]

The https://github.com/gfx-rs/wgpu/blob/master/wgpu/tests/clear_texture.rs test does part of that job so and has found plenty of issues. But most importantly it does not check if the right errors are returned / that failures occur as expected.
It's fairly tricky to get full coverage of this issue, but we should at least attempt to tableize it and put into a test. If done cleverly, this can be reuused for operation tests like the ones in clear_texture and others, e.g. using a format for binding etc.

Related #2045, #2057, #2323 (surely more)

[cwfitzgerald]

I think we generally treat this as the job of the WebGPU CTS running through firefox now.