feat: Added skip story on seen

Imp: Reorginzed some settings

src/Tweak.x

@@ -55,6 +55,7 @@ BOOL dmVisualMsgsViewedButtonEnabled = false;
         @"seen_auto_on_interact": @(NO),
         @"seen_auto_on_typing": @(NO),
         @"seen_on_story_like": @(NO),
+        @"advance_on_mark_seen": @(NO),
         @"indicate_unsent_messages": @(NO),
         @"unsent_message_toast": @(NO),
         @"warn_refresh_clears_preserved": @(NO)