feat: Serve frontend static files from backend

backend/src/app.module.ts

@@ -4,9 +4,18 @@ import { AppService } from './app.service';
 import { DatabaseModule } from './database/database.module';
 import { UserModule } from './user/user.module';
 import { AuthModule } from './auth/auth.module';
+import { ServeStaticModule } from '@nestjs/serve-static';
+import { join } from 'path';
 
 @Module({
-  imports: [DatabaseModule, UserModule, AuthModule],
+  imports: [
+    DatabaseModule,
+    UserModule,
+    AuthModule,
+    ServeStaticModule.forRoot({
+      rootPath: join(__dirname, '..', '..', 'dist'),
+    }),
+  ],
   controllers: [AppController],
   providers: [AppService],
 })