2D Improvements

[rcmaniac25]

2D support needs many additions. Some include:

• Batch TileSet changes (change a region of tiles to a type instead of each individually)
• Allow the encoder and framework to have Sprite/TileSet/Text as *.gpb
• Sprite
  • Support custom Effect in *.scene
  • Individual frame and frame index support in *.scene
  • Check that Animation can be loaded from Properties for Sprite
• TileSet
  • Render order support
  • Flip flag support
  • Animation support (this may be bumped out to individual Sprites)