added swagger

src/main.ts

@@ -1,6 +1,8 @@
 import { NestFactory } from '@nestjs/core';
 import { AppModule } from './app.module';
 import { ConfigService } from '@nestjs/config';
+import { SwaggerModule } from '@nestjs/swagger/dist/swagger-module';
+import { DocumentBuilder } from '@nestjs/swagger';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
@@ -9,6 +11,15 @@ async function bootstrap() {
 
   const port = configService.get<number>('app.port', 3000);
   app.setGlobalPrefix('api/v1');
+  
+  const config = new DocumentBuilder()
+  .setTitle("P'titsPas API")
+  .setVersion('1.0.0')
+  .build();
+
+  const document = SwaggerModule.createDocument(app, config);
+  SwaggerModule.setup('api/docs', app, document);
+
   await app.listen(port);
   console.log(`✅ P'titsPas API is running on: ${await app.getUrl()}`);
 }