feat: register health controller

server/src/app.module.ts

@@ -1,10 +1,12 @@
 import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
+import { HealthController } from './health.controller';
+import { TerminusModule } from '@nestjs/terminus';
 
 @Module({
-  imports: [],
+  imports: [TerminusModule],
-  controllers: [AppController],
+  controllers: [AppController, HealthController],
   providers: [AppService],
 })
 export class AppModule {}