Implement the ability to group beatmaps in song selection like in standard, it's needed!

flyte: Is there any design for beatmap grouping?

tracked at https://github.com/ppy/osu/issues/4919

Since 2019... This seems forgotten when it's one of the primary search functions in the game, why peppy?

Wow. Grouping has been planned for over 5 years now. I would strongly argue that a function as basic as grouping is not quantum mechanics. But "what do I know" I'm not the one that works on lazer.