Update Governance with TSC Composition

[mgielda]

The new website shows a copy paste from the current website, where the TSC is only represented by the Chair (photo missing). We would like a TSC rep list on the website (but just as a list with names + what they represent, no photo), generated from the YML data for workgroups and projects (as it's a derivative, i.e. there is 1 rep per project and workgroup).

This way we could actually generate the list on the website and get rid of the manually maintained list in the README of the TSC repo.

This will of course need some work on the TSC repo side.

[mgielda]

Since this will require a cleanup of projects, which I will also set up an issue for and mark as post-launch in a second, marking this as post-launch as well.