Support file-less scenes. Add scene split, merge and reassign file (#3006)

* Reassign scene file functionality
* Implement scene create
* Add scene create UI
* Add sceneMerge backend support
* Add merge scene to UI
* Populate split create with scene details
* Add merge button to duplicate checker
* Handle file-less scenes in marker preview generate
* Make unique file name for file-less scene exports
* Add o-counter to scene update input
* Hide rescan for file-less scenes
* Generate heatmap if no speed set on file
* Fix count in scene/image queries

pkg/scene/delete.go

@@ -128,7 +128,7 @@ type MarkerDestroyer interface {
 // Destroy deletes a scene and its associated relationships from the
 // database.
 func (s *Service) Destroy(ctx context.Context, scene *models.Scene, fileDeleter *FileDeleter, deleteGenerated, deleteFile bool) error {
-	mqb := s.MarkerDestroyer
+	mqb := s.MarkerRepository
 	markers, err := mqb.FindBySceneID(ctx, scene.ID)
 	if err != nil {
 		return err