adds inporbit connection check

mir_connector/.gitignore

@@ -1,3 +1,4 @@
+.idea/
 *.egg-info/
 *.egg
 __pycache__/

mir_connector/inorbit_mir_connector/src/connector.py

@@ -279,6 +279,10 @@ def start(self):
             except Exception:
                 self.logger.exception("Error reporting mission")
 
+    def inorbit_connected(self):
+        """Check if the InOrbit MQTT session is connected."""
+        return self.inorbit_sess.client.is_connected()
+
     def stop(self):
         """Exit the Connector cleanly."""
         self._should_run = False