This is a surprisingly minor refactor considering how many files it
touches, but most of this is only renames.
In terms of file renames:
- `tools.js` is now `sim/dex.js`
- `battle-engine.js` is now `sim/index.js` and its three classes are
in `sim/battle.js`, `sim/side.js`, and `sim/pokemon.js`
- `prng.js` is now `sim/prng.js`
In terms of variable renames:
- `Tools` is now `Dex`
- `BattleEngine` is now `Sim`
- `BattleEngine.Battle` is now `Sim.Battle`
- `BattleEngine.BattleSide` is now `Sim.Side`
- `BattleEngine.BattlePokemon` is now `Sim.Pokemon`
* Matchmaking: move battle logging back to Rooms.global
For now, logging should be dealt by the global room until logging can be
abstracted away from it. This makes it simpler to refactor the logic in
Matchmaker#startBattle to be handled by Rooms.createBattle where it belongs.
* Matchmaking: use Matchmaker#cancelSearch format parametre
Optimizes cancelling searches if the format is known
This abstracts matchmaking logic from the global room away to its own
module, allowing the two to be decoupled from each other entirely with
some refactoring.
Related to #3361
