Add element entrypoint import on the server

Author: justinfagnani

package-lock.json

@@ -88,6 +88,7 @@
     "@types/natural": "^5.1.1",
     "@webcomponents/catalog-api": "0.0.0",
     "@webcomponents/custom-elements-manifest-tools": "0.0.0",
+    "@webcomponents/internal-site-client": "0.0.0",
     "custom-elements-manifest": "^2.0.0",
     "firebase": "^9.6.10",
     "firebase-admin": "^11.0.0",

packages/catalog-server/package.json

@@ -3,14 +3,16 @@
  * Copyright 2022 Google LLC
  * SPDX-License-Identifier: Apache-2.0
  */
-import {render} from '@lit-labs/ssr/lib/render-with-global-dom-shim.js';
-import Router from '@koa/router';
+import {DefaultContext, DefaultState, ParameterizedContext} from 'koa';
+import {Readable} from 'stream';
 import {gql} from '@apollo/client/core/index.js';
+import Router from '@koa/router';
+import {render} from '@lit-labs/ssr/lib/render-with-global-dom-shim.js';
+import '@webcomponents/internal-site-client/lib/entrypoints/element.js';
+
 import {renderPage} from '../../../templates/base.js';
-import {renderElement} from './element-template.js';
-import {DefaultContext, DefaultState, ParameterizedContext} from 'koa';
 import {client} from '../../graphql.js';
-import {Readable} from 'stream';
+import {renderElement} from './element-template.js';
 
 export const handleElementRoute = async (
   context: ParameterizedContext<