feat: Projects homepage

[kiyarose]

A homepage matching the style of the main https://sillylittle.tech website listing all of the projects hosted under the page projects.sillylittle.tech, including these repos;

• /Portf/
• /oldClassic/
• /CookieCut/
• /Flean

This page should include a back button to return to https://sillylittle.tech, just like a native page.