Add chatroom discovery logic

Change-Id: I1b65b7bbcf321c51cb00e8d1c05a42291601a284
diff --git a/src/chatroom-tlv.hpp b/src/chatroom-tlv.hpp
new file mode 100644
index 0000000..954fbb5
--- /dev/null
+++ b/src/chatroom-tlv.hpp
@@ -0,0 +1,18 @@
+#ifndef CHRONOCHAT_CHATROOM_TLV_HPP
+#define CHRONOCHAT_CHATROOM_TLV_HPP
+
+namespace chronos {
+
+namespace tlv {
+
+enum {
+  PARTICIPANT = 128,
+  CHATROOM = 129,
+  TRUSTMODEL = 130
+};
+
+} //namespace tlv
+
+} //namespace chronos
+
+#endif //CHRONOCHAT_CHATROOM_TLV_HPP