add session_id to HELLO message

allows master to inform the client what session_id it was assigned internally

while this info can be ignored by clients and they should still work, it indicates the session_id that gets assigned inside ovos-core

hivemind_core/protocol.py

@@ -261,7 +261,8 @@ def handle_new_client(self, client: HiveMindClientConnection):
                           payload={"pubkey": client.handshake.pubkey,
                                    # allows any node to verify messages are signed with this
                                    "peer": client.peer,  # this identifies the connected client in ovos message.context
-                                   "node_id": self.peer})
+                                   "node_id": self.peer,
+                                   "session_id": client.sess.session_id})
         LOG.debug(f"saying HELLO to: {client.peer}")
         client.send(msg)