Dear ImGui within Unity thanks to ImGui.NET and the Unity Low-level native plug-in interface.

Currently this is only a prototype showing that it can be done, but hopefully one day it will become a more robust drop in unity package for anyone to use.

To build use premake on the PluginSource/source folder. Built assemblies will be placed into the unity project on build.

ImGUI.NET is compiled within unity using an asmdef, as it uses unsafe c sharp code.

• DX11 renderer.
• Clean up the DX11 renderer.
• Figure out how calling ImGui callbacks is going to work, as they currently crash unity.
• Cleanup the project structure as a whole. (.gitignore is uploading things it shouldn't, ImGui.NET should be a submodule etc.)
• DX12 renderer.
• Vulkan renderer.
• Metal renderer.
• OpenGL renderer.
• OpenGLES renderer.
• Add VR support, by allowing ImGui to be rendered onto a Unity texture, and displayed within 3D space.