Implement the 003-remove-combatant feature that adds the possibility to remove a combatant from an encounter

packages/application/src/index.ts

@@ -1,3 +1,4 @@
 export { addCombatantUseCase } from "./add-combatant-use-case.js";
 export { advanceTurnUseCase } from "./advance-turn-use-case.js";
 export type { EncounterStore } from "./ports.js";
+export { removeCombatantUseCase } from "./remove-combatant-use-case.js";