Other map set suggestions

[acc-is-sponge]

• [x] Modern?
  • [x] A mapset consisting only of maps that have been ranked in the last year
• [ ] A mapset based onf BeatLeader
• [x] Mapsets based on a specific classification. For example...
  • [x] Mapsets restricted to songs longer than 2:00 in length
  • [ ] Camellia

It would be better to implement at least the feature to display stars based on mapsets in the MOD first.

[acc-is-sponge]

2 partially resolves this: Added

• v3/all: Everything in the ScoreSaber v3
• v3/he10: ★10~
• v3/lt6: ~★6
• v3/hot: Maps ranked in the latest batch
• v3/modern: Maps ranked in the last 2 years
• v3/nts: Maps that have 90~ duration