CLab

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

• Implemented HardwareOcclusionBlockEntityCuller with OpenGL query-based visibility detection
• Added BlockEntityCullingManager to handle registration and culling logic for block entities
• Integrated block entity culling into rendering pipeline via MixinBlockEntityRenderDispatcher
• Enhanced MixinLevelRenderer to process block entity queries after rendering phase
• Added support for distance-based query frequency adjustment and result batching
• Implemented proper resource management with query pool growth and cleanup routines
• Updated ClientClass to initialize and manage block entity culling system alongside entity culling