Implement the 002-add-combatant feature that adds the possibility to add new combatants to an encounter

packages/application/src/index.ts

@@ -1,2 +1,3 @@
+export { addCombatantUseCase } from "./add-combatant-use-case.js";
 export { advanceTurnUseCase } from "./advance-turn-use-case.js";
 export type { EncounterStore } from "./ports.js";