feat(hiboutik): add Hiboutik API client, repositories and DTOs

HiboutikClient handles Basic auth and walks paginated endpoints. One read-only repository per entity (brands, categories, suppliers, products, stocks, customers).

src/hiboutik/brand.hiboutik.repository.ts

@@ -0,0 +1,16 @@
+import { Injectable } from '@nestjs/common';
+import { HiboutikClient } from './hiboutik.client';
+import { BrandHiboutikDto } from '../models/hiboutikDTO/brand.hiboutik.dto';
+
+/** Reads brands from the Hiboutik API. */
+@Injectable()
+export class BrandHiboutikRepository {
+  constructor(private readonly hiboutikClient: HiboutikClient) {}
+
+  async getBrands(): Promise<BrandHiboutikDto[]> {
+    return this.hiboutikClient.getAllPages<BrandHiboutikDto>('/brands', {
+      order_by: 'brand_id',
+      sort: 'ASC',
+    });
+  }
+}