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/.transform.yaml

@@ -32,6 +32,12 @@ field_type:
     discount_type: consts.DiscountType
   content_access:
     status: consts.ContentAccessStatus
+  orders:
+    type: consts.OrderType
+    status: consts.OrderStatus
+    currency: consts.Currency
+  tenant_ledgers:
+    type: consts.TenantLedgerType
 field_relate:
   users:
     OwnedTenant:
@@ -55,3 +61,30 @@ field_relate:
       json: users
       join_foreign_key: tenant_id
       join_references: user_id
+  orders:
+    Items:
+      relation: has_many
+      table: order_items
+      json: items
+      foreign_key: order_id
+      references: id
+  order_items:
+    Order:
+      relation: belongs_to
+      table: orders
+      json: order
+      foreign_key: order_id
+      references: id
+    Content:
+      relation: belongs_to
+      table: contents
+      json: content
+      foreign_key: content_id
+      references: id
+  tenant_ledgers:
+    Order:
+      relation: belongs_to
+      table: orders
+      json: order
+      foreign_key: order_id
+      references: id