Update system api

rpi/controllers/mqtt_forwarder.py

@@ -0,0 +1,21 @@
+from services.mqtt_service import MQTTService
+
+class MQTTForwarder:
+
+    client_id : str
+    local_broker : MQTTService
+    central_broker : MQTTService
+
+    def __init__(self, client_id : str, local_mqtt: MQTTService, central_mqtt: MQTTService):
+        self.client_id = client_id
+        self.local_broker = local_mqtt
+        self.central_broker = central_mqtt
+
+    def start(self, src_topic: str, dst_topic: str):
+        try:
+            def forward_handler(topic: str, msg: str):
+                self.central_broker.publish(dst_topic, msg)
+
+            self.local_broker.subscribe(src_topic, forward_handler)
+        except Exception as e:
+            print(f"An error occurred while forwarding from {src_topic} to {dst_topic}: {e}")