Incorporate <waitlist for [bucket] up to position N> as an option in ranked choice signup queue

[AFKGOLDBOTELITE]

Low positions on waitlists (especially for larger larps) are very close in expectation to a spot in the larp, while being waitlist 22 is mostly irrelevant, so having the system capable of implementing preferences like (Top game choice, up to waitlist 3 > Second game choice up to waitlist 1 > Third Game choice) would be useful in making a signup queue closer to a replacement for real-time.

Motivations:
Better player/game fit overall if people take slots (waitlist 1-3) in the larps they most want, rather than filling signup slots in larps they want less.
Higher density of players on waitlists than if the system nudges people toward empty slots of their Nth choice over waitlist of their top choices. Waitlist density makes larps more likely to weather inevitable drops.
Being closer to players' true preferences makes it more likely to be clear if there are larps that there is not demand for (vs. default behavior where your last expressed choice will default to being signed up for over waitlist 1 for your top picks).