Custom Shaders

[GameOverture]

• Integrate QCodeEditor (https://github.com/Megaxela/QCodeEditor)
  • Asset Preview can now edit code for CPP/H/VS/FS
  • Listen for external file modifications to currently open source code and update
• Create Shader Item type
  • Create Icon (pixel file idea)
  • Do all the ItemType things for adding 'Shader'
  • Create Model/Widget/UndoCmds/Draw
• Get ShaderToy shader working in code by assembling HyShader manually