New implementation allow enabling additional textures per batch only.

This function was renamed for consistency in raylib 3.0, just unified all examples to use TextFormat() instead of FormatText()

- Renamed Begin3dMode() --> BeginMode3D()
- Renamed Begin2dMode() --> BeginMode2D()
- Renamed End3dMode() --> EndMode3D()
- Renamed End2dMode() --> EndMode2D()

Cat replaced by dwarf

Examples have been renamed for coherence with raylib modules and test
examples have been merged into examples folder.

View CHANGELOG for details