Add persona and documentation types to data team

Why is this change being made?

This MR is a follow-up from the Business Operations fastboot. The data team discussed how we can make our handbook section more useful and we narrowed in on a labeling matrix of:

• 4 personas
• 4 documentation types listed in https://www.divio.com/blog/documentation/

This is the MVC to see how we like labeling sections with emojis.

Persona sheet https://docs.google.com/spreadsheets/d/139RHUnGAlU31roepOIgkACmqPGAjnCuGt4J0ogXcV8Q/edit?pli=1#gid=0