LivoxProto1: Add UdpCommandDemuxer.

We haven't genericized it with an unordered_map or integrated it
into device.cpp's async methods yet.

commonLibs/livoxProto1/CMakeLists.txt

@@ -7,6 +7,7 @@ if(ENABLE_LIB_livoxProto1)
 		device.cpp
 		protocol.cpp
 		broadcastListener.cpp
+		udpCommandDemuxer.cpp
 	)
 
 	# Set config define for header generation