Add /rooms cache

tests/unittests/ui/stub_ui.c

@@ -445,6 +445,7 @@ void cons_autoaway_setting(void) {}
 void cons_reconnect_setting(void) {}
 void cons_autoping_setting(void) {}
 void cons_autoconnect_setting(void) {}
+void cons_rooms_cache_setting(void) {}
 void cons_inpblock_setting(void) {}
 void cons_winpos_setting(void) {}
 void cons_tray_setting(void) {}