feat: add backend_v1 migration

backend_v1/app/services/services.gen.go

@@ -0,0 +1,28 @@
+package services
+
+import (
+	"gorm.io/gorm"
+)
+
+var _db *gorm.DB
+
+// exported CamelCase Services
+var (
+	Test *test
+)
+
+// @provider(model)
+type services struct {
+	db *gorm.DB
+	// define Services
+	test *test
+}
+
+func (svc *services) Prepare() error {
+	_db = svc.db
+
+	// set exported Services here
+	Test = svc.test
+
+	return nil
+}