refactor: replace @edx/paragon with @openedx/paragon (#446)

* refactor: replace @edx/paragon with @openedx/paragon

* fix: replaced frontend-build to @openedx to fix jest issues

* refactor: removed old unused package

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Co-authored-by: Abdullah Waheed <abdullah.waheed@arbisoft.com>

src/studio-header/UserMenu.jsx

@@ -3,7 +3,7 @@ import PropTypes from 'prop-types';
 import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
 import {
   Avatar,
-} from '@edx/paragon';
+} from '@openedx/paragon';
 import NavDropdownMenu from './NavDropdownMenu';
 import getUserMenuItems from './utils';