Add starter select ability selection

src/data/pokemon-species.ts

@@ -59,10 +59,18 @@ export abstract class PokemonSpeciesForm {
       this.genderDiffs = genderDiffs;
   }
 
-  isOfType(type: integer) {
+  isOfType(type: integer): boolean {
     return this.type1 === type || (this.type2 !== null && this.type2 === type);
   }
 
+  getAbilityCount(): integer {
+    return this.ability2 ? this.abilityHidden ? 3 : 2 : this.abilityHidden ? 2 : 1;
+  }
+
+  getAbility(abilityIndex: integer): Abilities {
+    return !abilityIndex ? this.ability1 : abilityIndex === 1 && this.ability2 ? this.ability2 : this.abilityHidden
+  }
+
   getSpriteAtlasPath(female: boolean, formIndex?: integer, shiny?: boolean): string {
     return this.getSpriteId(female, formIndex, shiny).replace(/\_{2}/g, '/');
   }