feat: add nestjs app (#172)

apps/nestjs/src/app.controller.ts

@@ -0,0 +1,19 @@
+import { Controller, Get, Inject } from "@nestjs/common";
+
+import { AppService } from "./app.service";
+
+@Controller()
+export class AppController {
+  // @ts-expect-error decorators are not correctly handled yet
+  constructor(@Inject(AppService) private readonly appService: AppService) {}
+
+  @Get()
+  async getHello(): Promise<string> {
+    return await this.appService.getHello();
+  }
+
+  @Get("/random")
+  getRandom(): string {
+    return Math.random().toString();
+  }
+}