weapon system rework

scripts/state_machine/substate_machine.gd

@@ -0,0 +1,27 @@
+extends StateMachine
+
+class_name SubStateMachine
+
+@export var enter_state: State
+
+func enter() -> void:
+	change_state(enter_state)
+
+func exit() -> void:
+	clear_state.rpc()
+
+func update(delta: float) -> void:
+	if current_state == null:
+		return
+	current_state.update(delta)
+
+func physics_update(delta: float) -> void:
+	if current_state == null:
+		return
+	current_state.physics_update(delta)
+
+func _process(_delta: float) -> void:
+	pass
+
+func _physics_process(_delta: float) -> void:
+	pass