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!");
+  });
+});

test/jest-e2e.json

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+{
+  "moduleFileExtensions": ["js", "json", "ts"],
+  "rootDir": ".",
+  "testEnvironment": "node",
+  "testRegex": ".e2e-spec.ts$",
+  "transform": {
+    "^.+\\.(t|j)s$": "ts-jest"
+  }
+}