WIP: updated E2E test suite with @grafana/plugin-e2e

[yesoreyeram]

This PR replaces the old E2E test suite using cypress with E2E test suite using @grafana/plugin-e2e

Fixes #720

[yesoreyeram]

@sunker - fyi

[sunker]

@sunker - fyi

Nice @yesoreyeram! Been merging a few minor breaking changes and improvements the last couple of days:

getQueryEditorRow is no longer async:

//before
const queryEditorRow = await explorePage.getQueryEditorRow('A');
await queryEditorRow.getByText('Enter SpreadsheetID').click();
//after
await explorePage.getQueryEditorRow('A').getByText('Enter SpreadsheetID').click();

toHavePanelError matcher does not exist anymore. Use the following istead:

await expect(panelEditPage.panel.getErrorIcon()).toBeVisible();
await expect(explorePage.timeSeriesPanel.getErrorIcon()).not.toBeVisible();

You no longer need to define the auth.login in your plugin code - point to the one from plugin-e2e instead:

//playwright.config.ts
projects: [
  {
    name: 'auth',
    testDir: 'node_modules/@grafana/plugin-e2e/dist/auth',
    testMatch: [/.*\.js/],
  },
  {
    name: 'chromium',
    use: {
      ...devices['Desktop Chrome'],
      storageState: 'playwright/.auth/user.json',
    },
    dependencies: ['auth'],
  },
],