Loki: Decouple data source plugin (#107242)

* WIP

* Update yarn.lock

* Align uuid dependency

* Add e2e test and update

* Update cue version

* Fix lint

* Update snapshot test

* Fix test that was importing from coupled module

* Fix lint

* Update public/app/plugins/datasource/loki/package.json

Co-authored-by: Zoltán Bedi <zoltan.bedi@gmail.com>

---------

Co-authored-by: Zoltán Bedi <zoltan.bedi@gmail.com>

e2e/plugin-e2e/loki/loki.spec.ts

@@ -0,0 +1,8 @@
+import { test, expect } from '@grafana/plugin-e2e';
+
+test('Smoke test: decoupled frontend plugin loads', async ({ createDataSourceConfigPage, page }) => {
+  await createDataSourceConfigPage({ type: 'loki' });
+
+  await expect(await page.getByText('Type: Loki', { exact: true })).toBeVisible();
+  await expect(await page.getByRole('heading', { name: 'Connection', exact: true })).toBeVisible();
+});