SDL2: Mouse is back ! With correct focus support
SDL2: Added typing support with keyboard
ShaderBuilder: Refactored and simplified Shader block creation
Several warning removal
Fixed Image::Copy

Added Texture (by image) update in TextureImage (and tileset)
Added lolimgui first integration pass

Add SafeEnum var in lua
MeshViewer SceneSetup is operational
Added imGui to vs-solution, not implemented yet