feat: add TenantLedger model and query generation

- Introduced TenantLedger model with fields for managing tenant transactions, including ID, TenantID, UserID, OrderID, transaction Type, Amount, and balance details.
- Implemented CRUD operations for TenantLedger with methods for Create, Update, Delete, and Reload.
- Generated query methods for TenantLedger to facilitate database interactions, including filtering, pagination, and aggregation functions.
- Established relationships with Order model for foreign key references.

backend/database/models/tenant_users.gen.go

@@ -18,14 +18,15 @@ const TableNameTenantUser = "tenant_users"
 
 // TenantUser mapped from table <tenant_users>
 type TenantUser struct {
-	ID        int64                              `gorm:"column:id;type:bigint;primaryKey;autoIncrement:true" json:"id"`
-	TenantID  int64                              `gorm:"column:tenant_id;type:bigint;not null" json:"tenant_id"`
-	UserID    int64                              `gorm:"column:user_id;type:bigint;not null" json:"user_id"`
-	Role      types.Array[consts.TenantUserRole] `gorm:"column:role;type:text[];not null;default:ARRAY['member" json:"role"`
-	Balance   int64                              `gorm:"column:balance;type:bigint;not null" json:"balance"`
-	Status    consts.UserStatus                  `gorm:"column:status;type:character varying(50);not null;default:active" json:"status"`
-	CreatedAt time.Time                          `gorm:"column:created_at;type:timestamp with time zone;not null;default:now()" json:"created_at"`
-	UpdatedAt time.Time                          `gorm:"column:updated_at;type:timestamp with time zone;not null;default:now()" json:"updated_at"`
+	ID            int64                              `gorm:"column:id;type:bigint;primaryKey;autoIncrement:true" json:"id"`
+	TenantID      int64                              `gorm:"column:tenant_id;type:bigint;not null" json:"tenant_id"`
+	UserID        int64                              `gorm:"column:user_id;type:bigint;not null" json:"user_id"`
+	Role          types.Array[consts.TenantUserRole] `gorm:"column:role;type:text[];not null;default:ARRAY['member" json:"role"`
+	Balance       int64                              `gorm:"column:balance;type:bigint;not null" json:"balance"`
+	Status        consts.UserStatus                  `gorm:"column:status;type:character varying(50);not null;default:active" json:"status"`
+	CreatedAt     time.Time                          `gorm:"column:created_at;type:timestamp with time zone;not null;default:now()" json:"created_at"`
+	UpdatedAt     time.Time                          `gorm:"column:updated_at;type:timestamp with time zone;not null;default:now()" json:"updated_at"`
+	BalanceFrozen int64                              `gorm:"column:balance_frozen;type:bigint;not null;comment:冻结余额：分/最小货币单位；下单冻结时从可用余额转入，最终扣款或回滚时转出；默认 0" json:"balance_frozen"` // 冻结余额：分/最小货币单位；下单冻结时从可用余额转入，最终扣款或回滚时转出；默认 0
 }
 
 // Quick operations without importing query package