Move this repo to https://github.com/jakartaee

In the steering committee we voted to moved all specification projects from eclipse-ee4j to jakartaee. As such this repo should move to in due time.

Moving is fairly automatic, and redirects will be automatically put in place from the current location here to the new location.

Extra from: https://www.eclipse.org/lists/jakarta.ee-spec/msg02073.html

"We voted on it in 2019 and then in 2020 we added it explicitly to our 2021 plan and voted on that plan. I think we just need to start executing. I sent about 30 emails like the following in an attempt to add some shape to it and kick off the move in the spec projects.

- https://www.eclipse.org/lists/jakartaee-platform-dev/msg02940.html
- https://www.eclipse.org/lists/messaging-dev/msg00028.html
- https://www.eclipse.org/lists/jakartaee-tck-dev/msg01417.html
- https://www.eclipse.org/lists/ejb-dev/msg00264.html
"

Also note that many projects have indeed moved: https://github.com/jakartaee/

Review the linked Eclipse mailing-list decisions and the Jakarta EE projects that have already moved. The work is complete when this repository is located under https://github.com/jakartaee and the existing location redirects to it, as described in the issue.

Written by the indexing model from the issue text.