chat: user-friendly INFO logs for invite/connect flow

- chat_sync.c: invite entry, JOINED/TIMEOUT messages
- conn_mgr_core.c: invite start (addrs+udp+tcp), NCD UP/DOWN/TIMEOUT,
  TCP connect/ready/close, membership check send/receive/confirm/deny,
  overall timeout
- node_conn_direct.c: NCD event names instead of numbers

tools/chatgui/src/joindialog.cpp

@@ -188,7 +188,7 @@ void JoinDialog::onConnectClicked() {
 
     chat_sync_connect_from_invite(d.channelId, nodeId,
         (const uint8_t*)d.pubkey.constData(),
-        (const uint8_t*)addrsBuf.constData(), addrCount);
+        (const uint8_t*)addrsBuf.constData(), addrCount, addrsBuf.size());
 }
 
 void JoinDialog::onConnectResult(uint64_t nodeId, uint64_t channelId, int result) {