feat: implement new structure

backend/app/services/common.go

@@ -0,0 +1,15 @@
+package services
+
+import (
+	"context"
+	"mime/multipart"
+
+	common_dto "quyun/v2/app/http/v1/dto"
+)
+
+// @provider
+type common struct{}
+
+func (s *common) Upload(ctx context.Context, file *multipart.FileHeader, typeArg string) (*common_dto.UploadResult, error) {
+	return &common_dto.UploadResult{}, nil
+}