[Jakarta EE New Members Onboarding Wiki] Feature needed

Amy (IBM) & I created a Onboarding document for both (Marketing Committee members = 1 internal document) & a New Jakarta EE Members (external front facing document) to make it easy and less repetitive the onboarding to the project to the diverse entities.

During current onboarding thread, it was stated that those 2 documents might no longer exists in the marketing drive: WG forum thread: https://www.eclipse.org/lists/jakarta.ee-wg/msg00776.html
Thank you, Tanja for checking latest status on documentation.

--- For reference to complete the task Jakarta ought to use its website under Membership tab and its repo, main repo: Jakarta EE to populate such information.

Example: MPWG onboarding document:
https://github.com/microprofile/microprofile-wg/wiki/MicroProfile-Working-Group:--Members-Onboarding

Start by checking the WG forum thread and the Jakarta EE website's Membership tab to determine whether the existing onboarding documents are still available. Compare the available material with the MicroProfile Working Group members-onboarding wiki example and the Jakarta EE repository. Done means two current onboarding documents are restored or created: one internal Marketing Committee document and one public new-members document.

Written by the indexing model from the issue text.