CloudMigration: Show warning message for successfully migrated non-core data sources (#91545)

* minor performance improvement

* apply a warning to any non-core plugins that successfully migrate

* commit frontend wip while I refactor some stuff

* update api

* repurpose error dialog to be a generic details dialog

* whitespace

* add unit test

* fixes from testing

* fix migration summary

* add comment

* fix localization stuff

* fix backend test

* reduce number of queries to the db

* some PR feedback

* whitespace

pkg/services/cloudmigration/api/dtos.go

@@ -111,8 +111,8 @@ type MigrateDataResponseItemDTO struct {
 	// required:true
 	RefID string `json:"refId"`
 	// required:true
-	Status ItemStatus `json:"status"`
-	Error  string     `json:"error,omitempty"`
+	Status  ItemStatus `json:"status"`
+	Message string     `json:"message,omitempty"`
 }
 
 // swagger:enum MigrateDataType
@@ -129,6 +129,7 @@ type ItemStatus string
 
 const (
 	ItemStatusOK      ItemStatus = "OK"
+	ItemStatusWarning ItemStatus = "WARNING"
 	ItemStatusError   ItemStatus = "ERROR"
 	ItemStatusPending ItemStatus = "PENDING"
 	ItemStatusUnknown ItemStatus = "UNKNOWN"
@@ -192,10 +193,10 @@ func convertMigrateDataResponseToDTO(r cloudmigration.MigrateDataResponse) Migra
 	for i := 0; i < len(r.Items); i++ {
 		item := r.Items[i]
 		items[i] = MigrateDataResponseItemDTO{
-			Type:   MigrateDataType(item.Type),
-			RefID:  item.RefID,
-			Status: ItemStatus(item.Status),
-			Error:  item.Error,
+			Type:    MigrateDataType(item.Type),
+			RefID:   item.RefID,
+			Status:  ItemStatus(item.Status),
+			Message: item.Error,
 		}
 	}
 	return MigrateDataResponseDTO{