allow lazer multis for matchcost

[Bathbot-Helper]

with the additions of events for multiplayer lobbies would it be possible to add match cost to multiplayer lobbies (lazer multis) and quick play? eg. https://osu.ppy.sh/multiplayer/rooms/1799248/events endpoint documentation: https://osu.ppy.sh/docs/index.html#get-apiv2roomsroomevents https://osu.ppy.sh/docs/index.html#get-apiv2roomsroom

Original message by @layendan