(feat) support datasource delete by name api

pkg/models/datasource.go

@@ -120,11 +120,16 @@ type UpdateDataSourceCommand struct {
 	Id    int64 `json:"-"`
 }
 
-type DeleteDataSourceCommand struct {
+type DeleteDataSourceByIdCommand struct {
 	Id    int64
 	OrgId int64
 }
 
+type DeleteDataSourceByNameCommand struct {
+	Name  string
+	OrgId int64
+}
+
 // ---------------------
 // QUERIES