feat(api): add inventory API (GET /api/inventory)

apps/api/src/app.module.ts

@@ -5,6 +5,7 @@ import { DatabaseModule } from './database/database.module';
 import { EquipmentModule } from './equipment/equipment.module';
 import { HealthModule } from './health/health.module';
 import { HuntingModule } from './hunting/hunting.module';
+import { InventoryModule } from './inventory/inventory.module';
 import { TravelModule } from './travel/travel.module';
 import { WorldModule } from './world/world.module';
 
@@ -18,6 +19,7 @@ import { WorldModule } from './world/world.module';
     HuntingModule,
     CombatModule,
     EquipmentModule,
+    InventoryModule,
   ],
 })
 export class AppModule {}