Restructured text (and markdown) is painful to programatically
manipulate, most python parsers are geared towards writing markdown and
generating html. I'd like to move the calendar updates to being
scripted, as such using csv to store them will be convenient. This also
allows us to simplify our scripting that manipulates the table
considerably.

Acked-by: Eric Engestrom <eric@engestrom.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8341>