feat: implement supplier management module with create, update, find, and delete functionalities

- Added CreateSupplierDto for supplier creation
- Added UpdateSupplierDto for supplier updates
- Implemented SuppliersController to handle HTTP requests for suppliers
- Created SuppliersService to manage supplier data using Prisma
- Integrated SuppliersModule to encapsulate suppliers-related components

src/main.ts

@@ -24,6 +24,22 @@ async function bootstrap() {
     defaultVersion: '1',
   })
 
+  // Enable CORS. You can set `CORS_ORIGINS` to a comma-separated list of allowed origins.
+  // Defaults include common localhost origins used by front-end dev servers.
+  const defaultOrigins = ['http://localhost:3001']
+  const envOrigins = process.env.CORS_ORIGINS
+    ? process.env.CORS_ORIGINS.split(',')
+        .map(s => s.trim())
+        .filter(Boolean)
+    : []
+  const allowedOrigins = envOrigins.length ? envOrigins : defaultOrigins
+  app.enableCors({
+    origin: allowedOrigins,
+    credentials: true,
+    methods: 'GET,HEAD,PUT,PATCH,POST,DELETE,OPTIONS',
+    allowedHeaders: 'Content-Type, Accept, Authorization, X-Requested-With, X-CSRF-Token',
+  })
+
   // Register global logging and response mapping interceptors
   app.useGlobalInterceptors(new LoggingInterceptor(), new ResponseMappingInterceptor())