Implement remote lna toggle cli cmd

variants/heltec_v2/target.cpp

@@ -50,4 +50,4 @@ void radio_set_tx_power(int8_t dbm) {
 mesh::LocalIdentity radio_new_identity() {
   RadioNoiseListener rng(radio);
   return mesh::LocalIdentity(&rng);  // create new random identity
-}
+}