strapi/examples/plugins/workspace-plugin/admin/src/index.js

import PluginIcon from './components/PluginIcon';
import pluginPkg from '../../package.json';
import pluginId from './pluginId';

const name = pluginPkg.strapi.name;

export default {
  register(app) {
    app.addMenuLink({
      to: `/plugins/${pluginId}`,
      icon: PluginIcon,
      intlLabel: {
        id: `${pluginId}.plugin.name`,
        defaultMessage: 'My plugin',
      },
      Component: async () => {
        const component = await import('./pages/App');

        return component;
      },
      permissions: [],
    });

    app.registerPlugin({
      id: pluginId,
      name,
    });
  },
};