Repo of external plugins required for VF-WP

Repository for the external plugins required for VF-WP wordpress sites setup.

Background - https://gitlab.ebi.ac.uk/emblorg/backlog/-/issues/371

Deployment process

In order to release external plugins changes to micorsites or any website, we need to create tag and then we need to update tag number in VF_EXTERNAL_PLUGINS_REPO_TAG variable in .env file located in https://github.com/visual-framework/vf-wp/blob/master/.env