feat: add get brand detail

src/modules/brand/brand.service.ts

@@ -117,6 +117,15 @@ class BrandService {
   async getPendingBrandsCount() {
     return await this.brandRepo.getPendingBrandsCount();
   }
+
+  async getBrandDetail(id: number) {
+    const brand = await this.brandRepo.model.findOne({ _id: id });
+    if (brand) throw new BadRequestError(BrandMessage.Exist);
+
+    return {
+      brand,
+    };
+  }
 }
 
 export { BrandService };