- Implement sub-asset import for mesh/model assets with manifest generation and deterministic GUIDs
- Extend AssetCatalog for sub-asset tracking and management
- Update AssetRegistry and ImportCoordinator for sub-asset workflows
- Add mesh asset parsing, GPU upload, and resource management
- Update mesh data structures for meshlet groups/hierarchy and LODs
- Improve tests for sub-asset import and mesh handling
- Enhance mocks for mesh asset testing and resource mapping
- Fix path handling and native DLL loading issues
- Miscellaneous bug fixes and refactoring
Refactored shader compilation and resource management systems:
- Introduced `DXCShaderCompiler` for HLSL compilation and reflection.
- Added `BuildFinalShaderCode` method for robust shader code generation.
- Replaced raw strings with `ShaderEntryPoint` struct for shader paths.
- Updated `RenderContext` and `RenderGraphContext` for new pipeline methods.
- Added thread-safe resource management methods in `ResourceManager`.
- Introduced `DXCShaderReflectionData` for shader reflection handling.
- Removed redundant code and simplified `ShaderPropertiesRegistry`.
BREAKING CHANGE: Updated shader and resource APIs to use new structures and methods.
