Update SVG logos and add new designs

- Replaced the existing aurcache.svg with a new design representing Arch Linux.
- Created a backup directory with previous versions of logos including aurcache.svg, default.svg, filebrowser.svg, gitea.svg, homeassistant.svg, jellyfin.svg, kiwix.svg, nextcloud.svg, picoshare.svg, portainer.svg, tdarr.svg, transmission.svg, and uptime-kuma.svg.
- Updated existing logos (filebrowser.svg, gitea.svg, homeassistant.svg, jellyfin.svg, kiwix.svg, nextcloud.svg, picoshare.svg, portainer.svg, tdarr.svg, transmission.svg, uptime-kuma.svg) to include role and title attributes for better accessibility.

logos/jellyfin.svg

@@ -1,4 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none">
-  <rect width="24" height="24" rx="4" fill="#071024"/>
-  <path d="M6 17v-6h12v6" stroke="#f59e0b" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round"/>
-</svg>
+<svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>Jellyfin</title><path d="M12 .002C8.826.002-1.398 18.537.16 21.666c1.56 3.129 22.14 3.094 23.682 0C25.384 18.573 15.177 0 12 0zm7.76 18.949c-1.008 2.028-14.493 2.05-15.514 0C3.224 16.9 9.92 4.755 12.003 4.755c2.081 0 8.77 12.166 7.759 14.196zM12 9.198c-1.054 0-4.446 6.15-3.93 7.189.518 1.04 7.348 1.027 7.86 0 .511-1.027-2.874-7.19-3.93-7.19z"/></svg>