Mesh shaders MSL writer

[inner-daemons]

Connections
Works towards #7197
Depends on #8456

Description
Adds support for mesh shaders to MSL writer. There still exist some issues:

• Divergence issue
• Clean up code
• Zero initialize task payload
• Limit dispatched workgroup counts
• Require MSL version in naga

Testing
Snapshots & examples & other tests

Squash or Rebase?
Squash

Checklist

• Run cargo fmt.
• Run taplo format.
• Run cargo clippy --tests. If applicable, add:
  • --target wasm32-unknown-unknown
• Run cargo xtask test to run tests.
• If this contains user-facing changes, add a CHANGELOG.md entry.