Better error messages, API tweaks

🆕 New custom exception when using invalid buffers in a shader, with clear error message
✅ Refactored some properties for the GraphicsDevice class

Captured delegates, improved shader generation

🆕 Added support for captured static/stateless delegates
🆕 Added support for local methods inside a shader
✅ Fixed non public static methods in shaders
✅ Fixed static members from parent class used in shaders
✅ Minor tweaks to the generated shader code

Static methods in shaders

🆕 Added support for static methods in shaders
✅ Fixed initialization of the WavefrontSize property for different GPUs
✅ License switched to MIT

Initial release

First public build, featuring shader caching, builtin HLSL vector types, HLSL intrinsics and more