Add loading indicators to product CRUD and dialog components

client/src/app/services/prestashop.serivce.ts

@@ -516,6 +516,16 @@ export class PrestashopService {
     );
   }
 
+  deleteProductImage(productId: number, imageId: number) {
+    // Presta : DELETE /images/products/{id_product}/{id_image}
+    return this.http.delete(
+      `${this.base}/images/products/${productId}/${imageId}`,
+      { responseType: 'text' }
+    ).pipe(
+      map(() => true)
+    );
+  }
+
   // -------- Stock (quantité) — gestion fine via stock_availables
 
   getProductQuantity(productId: number) {