Short term

• Add rotation
• Add scale
• Add simple hotkeys
• Add scale tool
• Add rotation tool
• Add lights
• Add lights helpers
• Add materials
• Add loaders
• Add materials editor
• Add cameras
• Add cameras helpers
• Add scene objects viewport
• Add sprites

Middle term

• Add multicameras view

Fixes

• MouseInput wrong intersections order
• mouseLeave/MouseEnter on parents