message: Update FolderConfig to 0.7.9
diff: /**
  * Edit a folder, configuring its name and appearance
  */
  -declare class FolderConfig extends FormApplication {
  - _updateObject(event?: Event, formData?: object): Promise<any>; // TODO: Add correct return type
  +declare class FolderConfig extends FormApplication<FolderConfig.Data, Folder.Data> {
  + /**
  + * @override
  + */
  + static get defaultOptions(): FolderConfig.Options;
  +
  + /**
  + * @override
  + */
  + get id(): string;
  +
  + /**
  + * @override
  + */
  + get title(): string;
  +
  + /**
  + * @override
  + */
  + getData(options?: Application.RenderOptions): Promise<FolderConfig.Data>;
  +
  + /**
  + * @param event - (unused)
  + * @override
  + */
  + protected _updateObject(event: Event, formData: Folder.Data): Promise<Folder | Folder | null>;
  +}
  +
  +declare namespace FolderConfig {
  + interface Data {
  + folder: Folder.Data;
  + sortingModes: {
  + a: 'FOLDER.SortAlphabetical';
  + m: 'FOLDER.SortManual';
  + };
  + submitText: string;
  + }
  +
  + interface Options extends FormApplication.Options {
  + /**
  + * @defaultValue `['sheet', 'folder-edit']`
  + */
  + classes: string[];
  +
  + /**
  + * @defaultValue `'templates/sidebar/folder-edit.html'`
  + */
  + template: string;
  +
  + /**
  + * @defaultValue `360`
  + */
  + width: number;
  + }
  }
  