CLab

feat(rendering): add hardware occlusion culling for block entities

• Implemented HardwareOcclusionBlockEntityCuller with OpenGL query-based visibility detection
• Added BlockEntityCullingManager to handle registration and management of block entity cullers
• Integrated block entity culling into LevelRenderer with proper mixin injections and redirects
• Created IBlockEntityCuller interface for standardized culling implementation
• Optimized rendering by caching camera position and using batched queries
• Added proper resource cleanup and pool management for GPU queries