fix(xmpp): format debug logging statements for consistency

Add detailed debug output tracking connection lifecycle, autoping events,
and session state transitions with timestamps and counters.

- Track connection attempts, successes, disconnects, and reconnects
- Log autoping timer events, responses, and timeouts
- Record session login, logout, and reconnection attempts
- Add elapsed time calculations since key events
- Use [CONNDBG] tag for easy log filtering

Files: connection.c, iq.c, session.c, connection.h

src/command/cmd_funcs.c

@@ -5356,8 +5356,6 @@ cmd_time(ProfWin* window, const char* const command, gchar** args)
             cons_bad_cmd_usage(command);
             return TRUE;
         }
-        if (!set_all)
-            break;
     }
     if (!set_all && n == ARRAY_SIZE(time_prefs)) {
         cons_bad_cmd_usage(command);