Sort JS imports by groups in the EE code

What does this MR do?

Sort all imports by their groups. This is the 2nd merge request to address the issue.

This MR covers the EE app code only.

Example

Without path group this order considered as valid

import { GlIcon } from '@gitlab/ui';
import $ from 'jquery';
import '~/behaviors/markdown/render_gfm';
import { unescape } from 'lodash';
import MarkdownHeader from './header.vue'; // not okay
import MarkdownToolbar from './toolbar.vue'; // not okay
import { deprecatedCreateFlash as Flash } from '~/flash';
import GLForm from '~/gl_form';
import axios from '~/lib/utils/axios_utils';
import { stripHtml } from '~/lib/utils/text_utility';
import { __, sprintf } from '~/locale';
import GlMentions from '~/vue_shared/components/gl_mentions.vue';
import Suggestions from '~/vue_shared/components/markdown/suggestions.vue';
import glFeatureFlagsMixin from '~/vue_shared/mixins/gl_feature_flags_mixin';

With path group this order will be transformed to

import { GlIcon } from '@gitlab/ui';
import $ from 'jquery';
import '~/behaviors/markdown/render_gfm';
import { unescape } from 'lodash';
import { deprecatedCreateFlash as Flash } from '~/flash';
import GLForm from '~/gl_form';
import axios from '~/lib/utils/axios_utils';
import { stripHtml } from '~/lib/utils/text_utility';
import { __, sprintf } from '~/locale';
import GlMentions from '~/vue_shared/components/gl_mentions.vue';
import Suggestions from '~/vue_shared/components/markdown/suggestions.vue';
import glFeatureFlagsMixin from '~/vue_shared/mixins/gl_feature_flags_mixin';
import MarkdownHeader from './header.vue';
import MarkdownToolbar from './toolbar.vue';

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team