Mesh Shading Tracking Issue

[SupaMaggie70Incorporated]

Should replace #3018.

Spec: todo, currently based on this comment.

Current open PR(s): #7089

Naga:

• Add mesh, task shaders to naga shader types so wgpu-hal can stop pretending they are compute shaders
• Support in WGSL frontend
• Validation
• Support in SPIRV writer
• Support in hlsl/msl writer

Backends:

• Vulkan
• DX12
• Metal

Features

• Multiview mesh shaders
• Queries
• Point primitives(at least in vulkan)