Character and Weapon Models

- Character models (beyond the initial square/capsule player shape) should exist.
- Weapon models should exist.
- These models should be preferably low poly, though the style is up to the implementer.
- These models should also contain animations for walking, aiming, idling, and dying.
- Implementer is free to choose any _free_ asset(s) they wish, within reason. **Credit for the asset(s) must be added within the start menu's credit box (see relevant issue), along with any other request the artist may have.**
- Modeler may also choose to develop their own asset(s) via an external program, like Blender.
- Assets must exist for the player and all enemy types.