Add 'Dungeon' Theme Tag

[Jayswing103]

At this point I think there's enough series whose main theme is dungeons appearing in modern day that it deserves its own tag to more easily filter it from other stories. Please make a tag for it.

 

[BakedBanana]

At this point I think there's enough series whose main theme is dungeons appearing in modern day that it deserves its own tag to more easily filter it from other stories. Please make a tag for it.

Why not put this suggestion under the New Tags Suggestion thread?
https://forums.mangadex.org/threads/megathread-new-tags-suggestions.2227404/#post-25847808