New features

This is the very first usable version of the module.

- Implemented the pushing of entities to GraphSearch (including users).
- Added the possibility to set a label for content pushed to GraphSearch.
- Fixed dependency namespacing in the .info.yml files.
- Fixed a bug with hiding empty facets on the search page.
- Fixed a bug when selecting a GraphSearch search area in the content type settings.
- Fixed a bug that caused the number of entities in the batch process settings not to be displayed.

Fixed issues:
- #3067254: Add rest module as a dependency
- #3068198: Menu link with hash value/anchor does not get included in response

Miscellaneous

#3019458: Possibility to add additional header and footer to email notification
We have added the possibility to add an additional header or footer to email notifications. This allows you to give a personal touch to your platform notifications.