- Add GDExtension ignore files for C++ and GDExtension source directories
- Implement CMakeLists.txt for Godot extension with proper library linking
- Create PHP stub functions for Minecraft crafting operations
- Add comprehensive C++ backend implementation with OpenGL rendering
- Implement window management, texture loading, and block rendering
- Add chunk system with face building and distance-based visibility
- Include mouse capture, camera controls, and crosshair rendering
- Implement world initialization, block placement, and chunk management
- Add sky gradient, fog effects, and transparent object rendering
