Add Hau as a potential Champion

This fixes the Generation 7 Elite Four not having a corresponding Champion to go along with them.

src/data/biomes.ts

@@ -7614,6 +7614,7 @@ export const biomeTrainerPools: BiomeTrainerPools = {
     [ TrainerType.ALDER, [] ],
     [ TrainerType.IRIS, [] ],
     [ TrainerType.DIANTHA, [] ],
+    [ TrainerType.HAU, [] ],
     [ TrainerType.LEON, [] ],
     [ TrainerType.GEETA, [] ],
     [ TrainerType.NEMONA, [] ],

src/data/enums/trainer-type.ts

@@ -169,6 +169,7 @@ export enum TrainerType {
   ALDER,
   IRIS,
   DIANTHA,
+  HAU,
   LEON,
   GEETA,
   NEMONA,

src/data/trainer-config.ts

@@ -757,6 +757,7 @@ export const trainerConfigs: TrainerConfigs = {
   [TrainerType.ALDER]: new TrainerConfig(++t).initForChampion([ Species.VOLCARONA, Species.GROUDON, Species.BOUFFALANT, Species.ACCELGOR, Species.CONKELDURR ]),
   [TrainerType.IRIS]: new TrainerConfig(++t).initForChampion([ Species.HAXORUS, Species.YVELTAL, Species.DRUDDIGON, Species.ARON, Species.LAPRAS ]),
   [TrainerType.DIANTHA]: new TrainerConfig(++t).initForChampion([ Species.HAWLUCHA, Species.XERNEAS, Species.GOURGEIST, Species.GOODRA, Species.GARDEVOIR ]),
+  [TrainerType.HAU]: new TrainerConfig(++t).initForChampion([ Species.ALOLA_RAICHU, [ Species.SOLGALEO, Species.LUNALA ], Species.NOIVERN, [ Species.DECIDUEYE, Species.INCINEROAR, Species.PRIMARINA ], Species.CRABOMINABLE ]),
   [TrainerType.LEON]: new TrainerConfig(++t).initForChampion([ Species.DRAGAPULT, [ Species.ZACIAN, Species.ZAMAZENTA ], Species.SEISMITOAD, Species.AEGISLASH, Species.MR_RIME ]),
   [TrainerType.GEETA]: new TrainerConfig(++t).initForChampion([ Species.GLIMMORA, Species.MIRAIDON, Species.ESPATHRA, Species.VELUZA, Species.KINGAMBIT ]),
   [TrainerType.NEMONA]: new TrainerConfig(++t).initForChampion([ Species.LYCANROC, Species.KORAIDON, Species.KOMMO_O, Species.PAWMOT, Species.DUSKNOIR ]),