fix: rename ECS components to avoid namespace collisions

- Renamed Camera2D → Camera2DComponent
- Renamed Camera3D → Camera3DComponent
- Renamed CameraActive → CameraActiveComponent
- Renamed Light → LightComponent
- Renamed DirectionalLight → DirectionalLightComponent
- Renamed PointLight → PointLightComponent
- Renamed SpotLight → SpotLightComponent
- Renamed MeshRenderer → MeshRendererComponent
- Renamed SkinnedMeshRenderer → SkinnedMeshRendererComponent

Avoids ambiguity with existing Render::Camera2D and Assets::MeshRenderer classes.
Updated HierarchyPanel.cpp to use new component names.

Author: LyeZinho