JS frontend stuff

Move old ember frontend to properly named folder
Add vue based new frontend

frontend-reactive/tests/integration/helpers/is-valid-mail-test.ts

@@ -1,17 +0,0 @@
-import { module, test } from 'qunit';
-import { setupRenderingTest } from 'frontend-reactive/tests/helpers';
-import { render } from '@ember/test-helpers';
-import { hbs } from 'ember-cli-htmlbars';
-
-module('Integration | Helper | isValidMail', function (hooks) {
-  setupRenderingTest(hooks);
-
-  // TODO: Replace this with your real tests.
-  test('it renders', async function (assert) {
-    this.set('inputValue', '1234');
-
-    await render(hbs`{{is-valid-mail this.inputValue}}`);
-
-    assert.dom().hasText('1234');
-  });
-});