Added player save function to "persistent" tag, added UI elements

scripts/blunderbus.gd

@@ -10,6 +10,7 @@ var cycle_count
 @export var gun_name : String
 @export_enum("Auto", "Single", "Burst") var fire_mode: int
 @export var fov_zoom_amt = .98
+@export var ads : bool = false
 @export var recoil_amount : Vector3 = Vector3(.2,0,0)
 @export var spread : Vector3 = Vector3(1,1,1)
 @export var kick_amount : float = 5