message: Update extensions-api/index.ts so that it works with tsdocs
diff: -export * from './layout';
  -export * from './locale';
  -export * from './container';
  -export * from './data';
  -export * from './sessionToken';
  -export * from './toast';
  +export type {LayoutApi, Layout} from './layout';
  +export {isLayoutApi} from './layout';
  +
  +export type {LocaleApi} from './locale';
  +export {isLocaleApi} from './locale';
  +
  +export type {ContainerApi, ExtensionContainer} from './container';
  +
  +export {isContainerApi} from './container';
  +
  +export type {DataApi, ExtensionData} from './data';
  +
  +export {isDataApi} from './data';
  +
  +export type {SessionTokenApi} from './sessionToken';
  +export {isSessionTokenApi} from './sessionToken';
  +
  +export type {ToastApi} from './toast';
  +export {isToastApi} from './toast';
  