Launch updated process and announce to teams

[shiragoodman]

**Implementation note: ** It looks like, when we are ready to go live, we will need to remove the orientation-epic.md file entirely and replace it with a new new-vfs-team-member.yml file using the code that you used in your personal repo. Then we would need to update the link in the guidance for new team members page on platform website to link to the new issue template URL. That work is not part of this ticket, though - just a note for the future.

Add labels: ["platform-orientation", "new-vfs-team-member", "platform-tech-team-support"]

Reevaluate the "educational tasks" check box once that page is complete