Adding Nextcloud

Users shall have to request via potentially hello@liberta.casa
till we can manage the storage. Alerts and all. Also GDPR.

Signed-off-by: Pratyush Desai <pratyush.desai@liberta.casa>

index.html

@@ -25,6 +25,7 @@
 	<tr><td>BookStack</td><td><a href="https://libertacasa.info">libertacasa.info</a></td><td>Public</td></tr>
          <tr><td>HedgeDoc</td><td><a href="https://hd.lysergic.dev">hd.lysergic.dev</a></td><td>Public</td></tr>
          <tr><td>Gitea</td><td><a href="https://git.com.de">git.com.de</a></td><td>Public</td></tr>
+         <tr><td>Nextcloud</td><td><a href="https://cloud.liberta.dev">cloud.liberta.dev</a></td><td>Upon Request</td></tr>
          <tr><td>Jellyfin</td><td><a href="https://lysergic.media">lysergic.media</a></td><td>Restricted</td></tr>
          <tr><td>Etherpad</td><td><a href="https://pad.lysergic.dev">pad.lysergic.dev</a></td><td>Defunct</td></tr>
          <tr><td>Shlink</td><td><a href="https://p.lsd25.xyz">p.lsd25.xyz</a></td><td>Restricted</td></tr>