Favicon is calculated by the second instead of using timeouts

[ky28059]

Title. Favicon is rendered in a useEffect with dep date which updates every second. Theoretically a timeout based solution akin to the one UGWA has would save on computing power.

Also, favicon and other non-layout logic should ideally be moved out of Layout.tsx, although to where is uncertain.

[ky28059]

Funnily enough this issue caused quite the debugging problem when testing #106. I spent close to an hour troubleshooting why the per-page titles I had set via <Helmet> weren't displaying properly in the tab, only to eventually realize that FaviconHandler overwrote the page title every second with a preconfigured default. Maybe now is a good time to address this?