Rite of Returning 1.0.78

Lich model replacement:
- Replaced assets/riteofreturning/models/entity/lich.bbmodel with uploaded Lich(1).bbmodel.
- Extracted the embedded texture to textures/entity/lich_skin.png.
- Kept existing lich renderer and animation assignments unchanged.
- Kept all 1.0.77 lich natural abilities and active spell keybinds.
- New model animations found: Idle, Sit, Slow Move, Fast Move, Right Move, Left Move, Back Move, Crouch, Crouch Walk, Attack1, Attack2, Shoot, Cast
