add ai, photo_mode and radio

core/ai/agents/base/patrol_state.gd

@@ -0,0 +1,12 @@
+extends State
+
+const IDLE_STATE_ID: StringName = &"idle"
+
+@onready var agent: AIBase = owner
+
+func enter() -> void:
+	agent.navigate_to_random_point()
+
+func physics_update(_delta)  -> void:
+	if agent.nav_agent.is_navigation_finished():
+		transitioned.emit(self, IDLE_STATE_ID)