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Add EXT_mesh_shader validation support #5640

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Add EXT_mesh_shader validation support #5640

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Commits on Apr 10, 2024

  1. Add EXT_mesh_shader validation support 

    1. Each OpEntryPoint with the MeshEXT Execution Model can have at most one global OpVariable of storage class TaskPayloadWorkgroupEXT.
2. PerPrimitiveEXT only be used on a memory object declaration or a member of a structure type
3. PerPrimitiveEXT only Input in Fragment and Output in MeshEXT
4. Added Mesh vulkan validation support for following rules:
   VUID-Layer-Layer-07039 VUID-PrimitiveId-PrimitiveId-07040,VUID-PrimitivePointIndicesEXT-PrimitivePointIndicesEXT-07042,
   VUID-PrimitiveLineIndicesEXT-PrimitiveLineIndicesEXT-07048, VUID-PrimitiveTriangleIndicesEXT-PrimitiveTriangleIndicesEXT-07054,
   VUID-ViewportIndex-ViewportIndex-07060 VUID-StandaloneSpirv-ExecutionModel-07330 VUID-StandaloneSpirv-ExecutionModel-07331
    @pmistryNV
    pmistryNV committed Apr 10, 2024
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