chore: migrate backend to monorepo apps and biome

apps/auth/src/auth.controller.spec.ts

@@ -0,0 +1,22 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { AuthController } from './auth.controller';
+import { AuthService } from './auth.service';
+
+describe('AuthController', () => {
+  let authController: AuthController;
+
+  beforeEach(async () => {
+    const app: TestingModule = await Test.createTestingModule({
+      controllers: [AuthController],
+      providers: [AuthService],
+    }).compile();
+
+    authController = app.get<AuthController>(AuthController);
+  });
+
+  describe('root', () => {
+    it('should return "Hello World!"', () => {
+      expect(authController.getHello()).toBe('Hello World!');
+    });
+  });
+});