change msg to use protobuf, add more msg type.

lichao

2021-03-29 f51636c193d032723c47343e39ff8296db350200

 proto/source/bhome_msg.proto

@@ -1,5 +1,7 @@
syntax = "proto3";

option optimize_for = LITE_RUNTIME;

package bhome.msg;

message BHAddress {
@@ -22,6 +24,7 @@
   kMsgTypeReply = 2;
   kMsgTypePublish = 3;
   kMsgTypeSubscribe = 4;
   kMsgTypeUnsubscribe = 5;
}

message DataPub {