SQLite model refactoring (#3791)

* Remove ID from PerformerPartial
* Separate studio model from sqlite model
* Separate movie model from sqlite model
* Separate tag model from sqlite model
* Separate saved filter model from sqlite model
* Separate scene marker model from sqlite model
* Separate gallery chapter model from sqlite model
* Move ErrNoRows checks into sqlite, improve empty result error messages
* Move SQLiteDate and SQLiteTimestamp to sqlite
* Use changesetTranslator everywhere, refactor for consistency
* Make PerformerStore.DestroyImage private
* Fix rating on movie create

internal/api/resolver_mutation_stash_box.go

@@ -97,6 +97,10 @@ func (r *mutationResolver) SubmitStashBoxPerformerDraft(ctx context.Context, inp
 			return err
 		}
 
+		if performer == nil {
+			return fmt.Errorf("performer with id %d not found", id)
+		}
+
 		res, err = client.SubmitPerformerDraft(ctx, performer, boxes[input.StashBoxIndex].Endpoint)
 		return err
 	})