Replacement for is:booster system

[taw]

This will need many steps:

• [x] new query variant:misprint - more or less cards like these
• [x] new query variant:foreign - more or less cards like these
• [x] as intermediate step, make PatchExcludeFromBoosters use that to simplify it
• [x] number:1-set support (as more accurate form of number<=set, covering some edge cases
• [x] new query like is:baseset that will be more or less equivalent to number:1-set -variant:misprint -variant:foreign (unless there's some other major category where it doesn't work)
• [x] any set where is:booster and is:baseset give different results updated with explicit filter:
• [x] default filter changed from is:booster to is:baseset
• [x] booster:one-arena
• [x] booster:one-*
• [x] booster:*
• [x] remove any remaining uses of is:booster from booster code
• [x] is:booster (= booster:*) calculated from what is actually in the boosters, so booster yaml won't be able to use that

I don't like these names much. If I could get mtgjson to maintain misprintvariant and foreignvariant, that would be great, but if not, it's a few regexps for a small number of sets.

Possible related work:

• [x] maybe some kind of scoped filter: for yamls
• [x] ~maybe some kind of other set queries query/brr: ... and filter/brr: ...~ - not worth it, scoped filter: covers all use cases
• [ ] convince mtgjson to maintain variant:misprint (requested)
• [ ] convince mtgjson to maintain variant:foreign (requested)

[taw]

I switched default filter to number:1-set -variant:misprint -variant:foreign (I should add a short alias for it), and removed all uses of is:booster except one in bro.foil where I'm not sure what's the correct version.

[taw]

I added is:baseset, it should be default query for cards that normally go into boosters. It's exactly equivalent to number:1-set -variant:misprint -variant:foreign.

[taw]

Closing it as done enough.