feat(api): setup nestjs

test/app.e2e-spec.ts

@@ -0,0 +1,24 @@
+import { Test, TestingModule } from "@nestjs/testing";
+import { INestApplication } from "@nestjs/common";
+import * as request from "supertest";
+import { AppModule } from "../src/app.module";
+
+describe("AppController (e2e)", () => {
+  let app: INestApplication;
+
+  beforeEach(async () => {
+    const moduleFixture: TestingModule = await Test.createTestingModule({
+      imports: [AppModule]
+    }).compile();
+
+    app = moduleFixture.createNestApplication();
+    await app.init();
+  });
+
+  it("/ (GET)", () => {
+    return request(app.getHttpServer())
+      .get("/")
+      .expect(200)
+      .expect("Hello World!");
+  });
+});