feat: add operator and business reference fields to tenant ledgers

- Added `operator_user_id`, `biz_ref_type`, and `biz_ref_id` fields to the TenantLedger model for enhanced auditing and traceability.
- Updated the tenant ledgers query generation to include new fields.
- Introduced new API endpoint for retrieving tenant ledger records with filtering options based on the new fields.
- Enhanced Swagger documentation to reflect the new endpoint and its parameters.
- Created DTOs for admin ledger filtering and item representation.
- Implemented the admin ledger retrieval logic in the tenant service.
- Added database migration scripts to introduce new fields and indexes for efficient querying.

backend/app/http/tenant/routes.gen.go

@@ -26,6 +26,7 @@ type Routes struct {
 	// Controller instances
 	content           *content
 	contentAdmin      *contentAdmin
+	ledgerAdmin       *ledgerAdmin
 	me                *me
 	mediaAssetAdmin   *mediaAssetAdmin
 	order             *order
@@ -112,6 +113,14 @@ func (r *Routes) Register(router fiber.Router) {
 		PathParam[int64]("contentID"),
 		Body[dto.ContentPriceUpsertForm]("form"),
 	))
+	// Register routes for controller: ledgerAdmin
+	r.log.Debugf("Registering route: Get /t/:tenantCode/v1/admin/ledgers -> ledgerAdmin.adminLedgers")
+	router.Get("/t/:tenantCode/v1/admin/ledgers"[len(r.Path()):], DataFunc3(
+		r.ledgerAdmin.adminLedgers,
+		Local[*models.Tenant]("tenant"),
+		Local[*models.TenantUser]("tenant_user"),
+		Query[dto.AdminLedgerListFilter]("filter"),
+	))
 	// Register routes for controller: me
 	r.log.Debugf("Registering route: Get /t/:tenantCode/v1/me -> me.get")
 	router.Get("/t/:tenantCode/v1/me"[len(r.Path()):], DataFunc3(