Fix importing lit under rollup v3

The updated https://www.npmjs.com/package/@rollup/plugin-node-resolve
plugin now looks inside package.json and uses that as a reference.
It looks at the exports field.

See I31f91e807b78d435631f5a0bdd358e5c75b04f3e
and I9f400ebb021e64dffe8828be04844e840c71f0ec.

Change-Id: I6a05766e6ce4a4f6f35cfd41003463c38e0fa66c

web/gr-serviceuser-create.ts

diff --git a/web/gr-serviceuser-create.ts b/web/gr-serviceuser-create.ts
index eaf864b..9364ff3 100644
--- a/web/gr-serviceuser-create.ts
+++ b/web/gr-serviceuser-create.ts
@@ -15,9 +15,9 @@
  * limitations under the License.
  */
 
-import {customElement, property, query, state} from 'lit/decorators';
+import {customElement, property, query, state} from 'lit/decorators.js';
 import {css, CSSResult, html, LitElement} from 'lit';
-import {unsafeHTML} from 'lit/directives/unsafe-html';
+import {unsafeHTML} from 'lit/directives/unsafe-html.js';
 import {RestPluginApi} from '@gerritcodereview/typescript-api/rest';
 import {
   AccountId,

web/gr-serviceuser-detail.ts

diff --git a/web/gr-serviceuser-detail.ts b/web/gr-serviceuser-detail.ts
index befa4dd..6558dc4 100644
--- a/web/gr-serviceuser-detail.ts
+++ b/web/gr-serviceuser-detail.ts
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-import {customElement, property, query, state} from 'lit/decorators';
+import {customElement, property, query, state} from 'lit/decorators.js';
 import {css, CSSResult, html, LitElement} from 'lit';
 import {PluginApi} from '@gerritcodereview/typescript-api/plugin';
 import {RestPluginApi} from '@gerritcodereview/typescript-api/rest';

web/gr-serviceuser-http-password.ts

diff --git a/web/gr-serviceuser-http-password.ts b/web/gr-serviceuser-http-password.ts
index 3a53103..aba9f8c 100644
--- a/web/gr-serviceuser-http-password.ts
+++ b/web/gr-serviceuser-http-password.ts
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-import {customElement, property, query} from 'lit/decorators';
+import {customElement, property, query} from 'lit/decorators.js';
 import {css, CSSResult, html, LitElement} from 'lit';
 import {RestPluginApi} from '@gerritcodereview/typescript-api/rest';
 

web/gr-serviceuser-list.ts

diff --git a/web/gr-serviceuser-list.ts b/web/gr-serviceuser-list.ts
index 939d54a..7b97827 100644
--- a/web/gr-serviceuser-list.ts
+++ b/web/gr-serviceuser-list.ts
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-import {customElement, property, state} from 'lit/decorators';
+import {customElement, property, state} from 'lit/decorators.js';
 import {css, CSSResult, html, LitElement} from 'lit';
 import {RestPluginApi} from '@gerritcodereview/typescript-api/rest';
 import {PluginApi} from '@gerritcodereview/typescript-api/plugin';

web/gr-serviceuser-ssh-panel.ts

diff --git a/web/gr-serviceuser-ssh-panel.ts b/web/gr-serviceuser-ssh-panel.ts
index 74b6a97..7ee49d2 100644
--- a/web/gr-serviceuser-ssh-panel.ts
+++ b/web/gr-serviceuser-ssh-panel.ts
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-import {customElement, property, query, state} from 'lit/decorators';
+import {customElement, property, query, state} from 'lit/decorators.js';
 import {css, CSSResult, html, LitElement, PropertyValues} from 'lit';
 import {RestPluginApi} from '@gerritcodereview/typescript-api/rest';