This introduces a new class, BattleActions, available as `battle.actions`,
moving all functions from `data/scripts.ts` to `sim/battle-actions.ts`.
This makes it so that "go to definition" will now work correctly for
functions previously in scripts; we no longer need UnimplementedError,
and there's now a clean conceptual separation between `battle` and
`battle-actions` (whereas the previous distinction between `battle` and
`scripts` was basically nonexistent).
This will be a difficult migration if you maintain a fork with custom
scripted mods. I'm sorry! Migration instructions are here:
https://github.com/smogon/pokemon-showdown/pull/8138
`BattlePokedex` is now `Pokedex`, `BattleItems` is now `Items`, etc.
I also renamed `Movedex` to `Moves` and `Statuses` to `Conditions`.
`TypeChart` isn't `Types` yet, because unlike the others, it's not
indexed by ID. That should probably be fixed one day.
The server now uses the same approach as the client of treating
cosmetic formes as real formes, as documented in `FORMES.md`.
This eliminates the need for the `.forme` and `.speciesid` properties
of `Pokemon`.
`pokemon.id` has also been removed: useful, since it turns out half
of its uses were bugs that should have used `pokemon.species.id`.
For historical reasons, move property definitions have been very blurry
across `EffectData`. Fortunately, recent refactors have made it
possible to put them all where they're supposed to be.
