add player stats and camera shaking on damage

scripts/player/player.gd

@@ -7,6 +7,7 @@ extends CharacterBody3D
 @export var _respawn_height: float = -5
 @export var _collision_debug_material: Material
 
+var stats: PlayerStats = PlayerStats.new()
 var movement: PlayerMovement = PlayerMovement.new()
 var aiming: PlayerAiming = PlayerAiming.new()