chore: scaffold NestJS sidecar with config, CORS, and dependency setup

src/app.module.ts

@@ -0,0 +1,13 @@
+import { Module } from '@nestjs/common';
+import { ConfigModule } from '@nestjs/config';
+import configuration from './config/configuration';
+
+@Module({
+    imports: [
+        ConfigModule.forRoot({
+            load: [configuration],
+            isGlobal: true,
+        }),
+    ],
+})
+export class AppModule {}