[Feature] add a prompt to database commit on start-up

adds a new function:
gui_syncyesno_run_w_tmo(ticks, tmo_default_res, main_msg,yes_msg, no_msg)

when a database needs committed on start-up
a yes no prompt will appear if not answered within 5 seconds
it defaults to Yes

if instead you choose No next start-up you will be asked again

you could rebuild the db still and waste time but it wouldn't hurt
anything so I don't think that path needs blocked

Change-Id: I58411f6e6bfebb6f142d99f33a1e8885ae7785c1

apps/menus/main_menu.c

@@ -78,6 +78,7 @@ static int reset_settings(void)
             settings_apply(true);
             settings_apply_skins();
             break;
+        case YESNO_TMO:
         case YESNO_NO:
             break;
         case YESNO_USB: