[Add]: Add a page to introduce the BP Team

[imath]

What needs to be done?

Currently we have the team introduced into the right part of this page: https://buddypress.org/about/

I believe a better place for it would be into the contributor handbook inside the project chapter.

Handbook to add the page in

buddypress/docs/contributor

Tasks to accomplish

• This task has been added to the "Todo" panel of the Documentation project.
• A PR has been submitted to the BuddyPress GH repository, it has been linked to this issue/task & the task was moved to the "In progress" panel of the Documentation project.
• The PR has been converted to a SVN patch and committed to the BuddyPress SVN repository & the task was moved to the "Done" panel of the Documentation project.