feat: expose health and demo character APIs

apps/api/src/app.module.ts

@@ -1,11 +1,9 @@
 import { Module } from '@nestjs/common';
-import { AppController } from './app.controller';
-import { AppService } from './app.service';
+import { CharactersModule } from './characters/characters.module';
 import { DatabaseModule } from './database/database.module';
+import { HealthModule } from './health/health.module';
 
 @Module({
-  imports: [DatabaseModule],
-  controllers: [AppController],
-  providers: [AppService],
+  imports: [DatabaseModule, HealthModule, CharactersModule],
 })
 export class AppModule {}