lan discovery in socket_cs

Signed-off-by: fufesou <shuanglongchen@yeah.net>

libs/hbb_common/protos/base_proto.proto

@@ -0,0 +1,21 @@
+syntax = "proto3";
+package base;
+
+message DisplayInfo {
+  sint32 x = 1;
+  sint32 y = 2;
+  int32 width = 3;
+  int32 height = 4;
+  string name = 5;
+  bool online = 6;
+}
+
+message PeerInfo {
+  string username = 1;
+  string hostname = 2;
+  string platform = 3;
+  repeated DisplayInfo displays = 4;
+  int32 current_display = 5;
+  bool sas_enabled = 6;
+  string version = 7;
+}