Projects page table of projects

[IzzySmillie]

Outline
Story: https://github.com/RaspberryPiFoundation/digital-editor/issues/47
Designs: Light mode design and Dark mode design

ACs

• Implement the projects table design
• The table should only have the title for now (last updated coming in another ticket). Don't delete the 'delete project' code, as that will be needed in another ticket.

[create-issue-branch]

Branch issues/309-Projects_page_table_of_projects created!