Documentation mega issue #84

Produce docs/user guide to give to the game dev club with handover.

Structure of documentation:

admin-dashboard
  events
  members
  committee
  contributors
  games
  art
  showcases
pages
  landing
  about-committee
automation - adding games automatically from itch game jams
deployment

^ above structure should go in a /documentation directory next to src and public

for admin dashboard docco pages:

• each page should contain a list of the fields that need to be filled out to create a new entry and a short explanation of each
• explain any noteworthy cases where filling out a field a certain way causes a major difference on the frontend. e.g. rendering an itch widget vs a non itch widget
• for fields that need information to be filled from itch.io, a description of where to get this information from should be included
• the process for adding, managing, and removing admin accounts who can access the admin site

for frontend page docco

• each page should cover what the committee need to do to change any hardcoded chunks of text or images on the page

• so far i think only the landing page and about/committee page have sections like this