plugins: refactory to use default export for new backend system

Co-authored-by: Fredrik Adelöw <freben@gmail.com>
Co-authored-by: Camila Belo <camilaibs@gmail.com>
Co-authored-by: Johan Haals <johan.haals@gmail.com>
Co-authored-by: Philipp Hugenroth <philipph@spotify.com>
Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/devtools-backend/api-report.md

@@ -27,7 +27,8 @@ export class DevToolsBackendApi {
 }
 
 // @public
-export const devtoolsPlugin: () => BackendFeature;
+const devtoolsPlugin: () => BackendFeature;
+export default devtoolsPlugin;
 
 // @public (undocumented)
 export interface RouterOptions {

plugins/devtools-backend/src/index.ts

@@ -22,4 +22,4 @@
 
 export { DevToolsBackendApi } from './api';
 export * from './service/router';
-export { devtoolsPlugin } from './plugin';
+export { devtoolsPlugin as default } from './plugin';