Add ShopModel and integrate with ProductModel

- Created ShopModel with fields for shop name, description, and user association.
- Updated ProductModel to include a foreign key relationship with ShopModel.
- Added admin interface for ShopModel with search functionality.
- Created migrations for ShopModel and its integration with ProductModel.

backend/product/admin.py

@@ -41,6 +41,18 @@ class InPackItemsAdmin(ModelAdmin, ImportExportModelAdmin):
             "widget": ArrayWidget,
         }
     }
+from account.models import ShopModel
+@admin.register(ShopModel)
+class ShopModelAdmin(ModelAdmin, ImportExportModelAdmin):
+    search_fields = ['name']
+    compressed_fields = True
+    warn_unsaved_form = True
+
+    formfield_overrides = {
+        ArrayField: {
+            "widget": ArrayWidget,
+        }
+    }
 
 
 class AttributeValueInLine(StackedInline):
@@ -180,13 +192,13 @@ class ProductModelAdmin(ModelAdmin, ImportExportModelAdmin):
     readonly_fields = ('slug', 'created_at')
     search_fields = ['name', 'description', ]
     list_filter = ['show', 'category']
-    autocomplete_fields = ['related_products', ]
+    autocomplete_fields = ['related_products', 'shop']
     # compressed_fields = True
     warn_unsaved_form = True
     actions_list = ['redirect_to_learn', 'update_products_price']
     list_display = ['display_image', 'display_price', 'view', 'show', 'rating', 'category', 'created_at']
     fieldsets = (
-        ('فیلد های اصلی', {'fields': ('name', 'description',  'category', 'related_products', 'show',), "classes": ["tab"],}),
+        ('فیلد های اصلی', {'fields': ('name', 'description',  'category', 'related_products', 'show', 'shop'), "classes": ["tab"],}),
         ('فیلد های سيو', {'fields': ('meta_description', 'meta_keywords', 'meta_rating', 'slug'), "classes": ["tab"],}),
         ('فیلد های مربوط به کاربر', {'fields': ('rating', 'view',), "classes": ["tab"],}),
         # ('فیلد های ایتم های پک', {'fields': ('in_pack_items', ), "classes": ["tab"],})