Create Generic Character Class

[Zwhjorth]

Issue Summary In order to simplify class creation, a generic "character" class is needed; one which will include players and NPCs. The common functionality between all game characters should be sliced out of the Player class, and given to a generic Character class. The Player class should then be made to extend Character.

Possible Steps to Resolve

1. Create a character scene and script, containing the basic functionality of a character. Included nodes are likely to be:
   • CharacterBody3D
   • CollisionShape3D
   • Sprite3D
2. Refactor Player class to extend from Character
3. Verify functionality

Exit Criteria A generic Character class is created, which the Player class extends.