Supprime les fichiers de configuration et ajoute le service NestJS

Supprime les fichiers de configuration comme `.eslintignore`, `.prettierignore`, et `.editorconfig`. Ajoute un service backend NestJS et met à jour les dépendances dans `package.json` et `pnpm-lock.yaml`. Crée une nouvelle application E2E pour le backend.

apps/backend/src/app/app.controller.spec.ts

@@ -0,0 +1,22 @@
+import { Test, TestingModule } from '@nestjs/testing';
+
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+
+describe('AppController', () => {
+  let app: TestingModule;
+
+  beforeAll(async () => {
+    app = await Test.createTestingModule({
+      controllers: [AppController],
+      providers: [AppService],
+    }).compile();
+  });
+
+  describe('getData', () => {
+    it('should return "Hello API"', () => {
+      const appController = app.get<AppController>(AppController);
+      expect(appController.getData()).toEqual({ message: 'Hello API' });
+    });
+  });
+});

apps/backend/src/app/app.controller.ts

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+import { Controller, Get } from '@nestjs/common';
+
+import { AppService } from './app.service';
+
+@Controller()
+export class AppController {
+  constructor(private readonly appService: AppService) {}
+
+  @Get()
+  getData() {
+    return this.appService.getData();
+  }
+}

apps/backend/src/app/app.module.ts

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+import { Module } from '@nestjs/common';
+
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+
+@Module({
+  imports: [],
+  controllers: [AppController],
+  providers: [AppService],
+})
+export class AppModule {}

apps/backend/src/app/app.service.spec.ts

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+import { Test } from '@nestjs/testing';
+
+import { AppService } from './app.service';
+
+describe('AppService', () => {
+  let service: AppService;
+
+  beforeAll(async () => {
+    const app = await Test.createTestingModule({
+      providers: [AppService],
+    }).compile();
+
+    service = app.get<AppService>(AppService);
+  });
+
+  describe('getData', () => {
+    it('should return "Hello API"', () => {
+      expect(service.getData()).toEqual({ message: 'Hello API' });
+    });
+  });
+});

apps/backend/src/app/app.service.ts

@@ -0,0 +1,8 @@
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class AppService {
+  getData(): { message: string } {
+    return { message: 'Hello API' };
+  }
+}

apps/backend/src/main.ts

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+/**
+ * This is not a production server yet!
+ * This is only a minimal backend to get started.
+ */
+
+import { Logger } from '@nestjs/common';
+import { NestFactory } from '@nestjs/core';
+
+import { AppModule } from './app/app.module';
+
+async function bootstrap() {
+  const app = await NestFactory.create(AppModule);
+  const globalPrefix = 'api';
+  app.setGlobalPrefix(globalPrefix);
+  const port = process.env.PORT || 3000;
+  await app.listen(port);
+  Logger.log(
+    `🚀 Application is running on: http://localhost:${port}/${globalPrefix}`
+  );
+}
+
+bootstrap();