chore: add prettier (1/3): add packages, configurations, fix lint issues (#6382)

* fix: remove redundant eslint rules

* chore: bump `prettier` to v2.8.7

* docs: vue files to use html comments for licenses

- Prettier's Vue parser freaks out if it sees a *.js style comment in a *.vue file.

* docs: more licenses for vue files

* fix: don't ignore *.vue files

* fix: use defaults for tabWidth and printWidth

* simplify .prettierignore

* enforce a printWidth of 100

* fix: use `eslint-plugin-prettier`, remove conflicting rules

* test: fix gauge tests (for real)

* test: fix notebook test selectors

* test: fix restrictedNotebook test selectors

* test: remove useless assignment

* lint: __dirname as global

* lint: revert eslint config + whitespace changes, commit new config

* style: remove unnecessary string concat of literals

* test: fix missed gauge test

* fix: use new eslint rules

* feat: add blank `.git-blame-ignore-revs` file

* docs: update to mention Prettier and format.

* Revert "test: fix gauge tests (for real)"

This reverts commit 6afad450389edc2f16ff0d00c9524621a7ba53bc.

* Revert "test: fix notebook test selectors"

This reverts commit 17fe1cbbff02e9298f041b5ea0fea5494fe54d94.

* Revert "test: fix restrictedNotebook test selectors"

This reverts commit 97e0ede826b7dd61c5443845443d806a56f3f305.

* Revert "test: fix missed gauge test"

This reverts commit e2398fc38ca94beff2066cc253173412ad47f8b9.

* test: fix gauge tests (no formatting)

* test: update notebook e2e selectors (no formatting)

* test: update restrictedNotebook e2e selectors (no formatting)

* fix: temporarily disable lint check

e2e/tests/visual/faultManagement.visual.spec.js

@@ -19,7 +19,7 @@
  * this source code distribution or the Licensing information page available
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
-
+/* global __dirname */
 const path = require('path');
 const { test } = require('../../pluginFixtures');
 const percySnapshot = require('@percy/playwright');
@@ -29,7 +29,6 @@ const utils = require('../../helper/faultUtils');
 test.describe('The Fault Management Plugin Visual Test', () => {
 
     test('icon test', async ({ page, theme }) => {
-        // eslint-disable-next-line no-undef
         await page.addInitScript({ path: path.join(__dirname, '../../helper/', 'addInitFaultManagementPlugin.js') });
         await page.goto('./', { waitUntil: 'networkidle' });