Add to device metadata and remote hardware config

meshtastic/mesh.options

@@ -54,5 +54,6 @@
 *NeighborInfo.neighbors max_count:10
 
 *DeviceMetadata.firmware_version max_size:18
+*DeviceMetadata:remote_hardware_pins max_count:4
 
 *RemoteHardwarePin.name         max_size:15

meshtastic/mesh.proto

@@ -1468,6 +1468,11 @@ message Neighbor {
    * Device hardware model
    */
   HardwareModel hw_model = 9;
+
+  /*
+   * Available GPIO pins for RemoteHardware module
+   */
+  repeated RemoteHardwarePin remote_hardware_pins = 10;
 }
 
 /*