[Feature] CGUI Editor

[WeAthFoLD]

New CGUI Editor that utilizes the new IMGUI, hopefully easier to create and maintain.

Functions outline:

Preview

• A window that represents the final screen
• Full screen/Windowed
• [bonus] Dragging, moving, scaling tool
• [bonus] Shows resolution @ bottom

Hierarchy

• Widget tree
• Add, Remove, Reorder, Rename

Menu

• File
  • (shows current filename)
  • Open
  • Save...
  • Save As...
  • Exit
• View
  • Toggle Full Screen: {On|Off}
  • Toggle Black Background: {On|Off}

Inspector

• Views current selected widget
• Widget data + All components
• Add component/Remove component/Copy&Paste Component
• [bonus] Option: Inspect all/inspect only serialized

[nooooocato]

Awesome！