Miscellaneous awesome search improvements

[eevee]

I've collected a bunch from emails and idle thoughts in #veekun and whatnote. Instead of making a dozen new tickets, I'm dumping them all here to start, and we can later think about how to fit them in or how they might affect the design of a new search.

• Change move learning to mean "can get this move in this game by any means" — trading, evolution, whatever
  • Events? Christ.
  • Maybe the search should just have you pick a game for the entire search, rather than specifically for moves?
• Filter by type resistance
  • Or weakness, presumably
  • Include abilities that effectively provide a resistance, like Lightning Rod?
• Filter by status ailment resistance (via types and/or abilities)
• Search for families with 3+ members
  • More family-oriented tools would be nice in general, I think
• Search by evolution method
• Sort by regional dex number
• Filter by form, or not form, or whatever
• Filter by, and display, internal ids
• Better name searching (Sanky wanted to find all five-letter Japanese names)
• Filter by not in an egg group?
• Display locations
• Display names in various languages
• Pokémon with type X but not type Y

I'm not even sure how the UI for some of this would work, haha.

Maybe veekun 8 should merge search with lookup and have a little query language...

Also something I kept trying to figure out how to build over in veekun-pokedex was better support for browsing. There are a lot of criteria that group Pokémon into a small set of distinct categories, and these feel more like things you should be able to see grouped into those categories, rather than search for one at a time. Generation, egg groups, types, evolution methods, growth rate, and hatch rate all come to mind. Even stats and effort and capture rate would work as long as they were grouped into rough categories. I just don't know how to make the UI work while still making searching work sensibly.