* Rename `Abilities` to `AbilityId`
* Rename `abilities.ts` to `ability-id.ts`
* Rename `Moves` to `MoveId`
* Rename `moves.ts` to `move-id.ts`
* Rename `Species` to `SpeciesId`
* Rename `species.ts` to `species-id.ts`
* Rename `Biome` to `BiomeId`
* Rename `biome.ts` to `biome-id.ts`
* Replace `Abilities` with `AbilityId` in comments
* Replace `Biome` with `BiomeId` in comments
* Replace `Moves` with `MoveId` in comments
* Replace `Species` with `SpeciesId` in comments
* [Test] Add/update test utils
- Add `FieldHelper` which has methods to mock a pokemon's ability
or force a pokemon to be Terastallized
- Add `MoveHelper#use` which can be used to remove the need
for setting pokemon move overrides by modifying the
moveset of the pokemon
- Add `MoveHelper#selectEnemyMove` to make an enemy pokemon
select a specific move
- Add `MoveHelper#forceEnemyMove` which modifies
the pokemon's moveset and then uses `selectEnemyMove`
- Fix `GameManager#toNextTurn` to work correctly in double battles
- Add `GameManager#toEndOfTurn` which advances to the end of the turn
* Update some tests
- Disable broken Good As Gold test
and add `.edgeCase` to Good As Gold
- Fix Powder test
- Update some tests to demonstrate new methods
