Adding the type to Vertex Attributes in the bare yaml reflection

[Interrupt]

I don't know if this would be useful, but someone in the #gamedev channel on the Zig discord was talking about wanting to get the type of a vertex attribute and I saw that it wasn't being included yet, this adds some type info to the StageAttr struct and outputs the type in generated yaml files just to start.

[floooh]

Might be useful for some people, but note that it isn't required that the vertex format in the pipeline object exactly matches the shader input, since the vertex fixed function pipeline does a limited amount of conversions (e.g. packed formats like ubyte4n will be unpacked into vec4, vec2/3/4 expanded (and afaik also clipped) as needed.

I'll have a quick look in the evening and will merge then.

[floooh]

Doing a quick test on this now...

[floooh]

Ok looks good and merged. I did one minor change: remove the const from the get_type_for_attribute() return type (since the return type is a value the constness is redundant).

Thanks for the PR!

[floooh]

Binaries will be uptodate after this CI pipeline goes green: https://github.com/floooh/sokol-tools/actions/runs/10724881064