feat: add coupon support to orders and create user_coupons model

- Added CouponID field to Order model to track used coupons.
- Updated order query generation to include CouponID.
- Introduced UserCoupon model to manage user coupon associations.
- Implemented query methods for UserCoupon to facilitate CRUD operations.
- Updated query context and default query setup to include UserCoupon.

backend/app/services/provider.gen.go

@@ -38,6 +38,13 @@ func Provide(opts ...opt.Option) error {
 	}); err != nil {
 		return err
 	}
+	if err := container.Container.Provide(func() (*coupon, error) {
+		obj := &coupon{}
+
+		return obj, nil
+	}); err != nil {
+		return err
+	}
 	if err := container.Container.Provide(func() (*creator, error) {
 		obj := &creator{}
 
@@ -67,12 +74,11 @@ func Provide(opts ...opt.Option) error {
 		audit *audit,
 		common *common,
 		content *content,
+		coupon *coupon,
 		creator *creator,
 		db *gorm.DB,
-		job *job.Job,
 		notification *notification,
 		order *order,
-		storage *storage.Storage,
 		super *super,
 		tenant *tenant,
 		user *user,
@@ -82,12 +88,11 @@ func Provide(opts ...opt.Option) error {
 			audit:        audit,
 			common:       common,
 			content:      content,
+			coupon:       coupon,
 			creator:      creator,
 			db:           db,
-			job:          job,
 			notification: notification,
 			order:        order,
-			storage:      storage,
 			super:        super,
 			tenant:       tenant,
 			user:         user,