feat: absorb cloudron kuma monitoring from PFVCluster [#727]

monitoring/ = cloudron-apps.txt (55-app inventory, #435) +
kuma-cloudron-sync.py (coverage checker, path re-rooted).
Removed from PFVCluster in the paired commit there.
Meat: https://projects.knownelement.com/issues/727#note-3913

monitoring/cloudron-apps.txt

@@ -0,0 +1,62 @@
+ap4ap.org
+bi.knownelement.com
+booking.rackrental.net
+booking.reachableceo.com
+booking.roguetechnologies.net
+booking.startinglineproductions.com
+booking.teamrental.net
+booking.thepeernet.com
+bookmarks.knownelement.com
+broadcast.thepeernet.com
+broadcast.turnsys.com
+building-management.knownelement.com
+chat.knownelement.com
+community.turnsys.com
+design.knownelement.com
+erp.knownelement.com
+esign.knownelement.com
+ezeda.org
+ezpodstack.org
+finance.turnsys.com
+forms.knownelement.com
+git.knownelement.com
+grafana.knownelement.com
+helpdesk.knownelement.com
+hfnfc.net
+hfnoc.net
+ipam.knownelement.com
+jupyter.knownelement.com
+knownelement.com
+learn.turnsys.com
+marketing.turnsys.com
+matrix.turnsys.com
+meetmorse.com
+merchantsofhope.org
+my.knownelement.com
+nextcloud.knownelement.com
+paperless.knownelement.com
+photos.knownelement.com
+phplist.knownelement.com
+projects.knownelement.com
+pwvault.turnsys.com
+rackrental.net
+reachableceo.com
+readlater.knownelement.com
+recordings.thepeernet.com
+redwfo.com
+rss.knownelement.com
+rwscp.net
+sidedoorgroup.org
+sol-calc.com
+startinglineproductions.com
+staticbits.knownelement.com
+status.knownelement.com
+suborbital-systems.com
+surveys.knownelement.com
+thepeernet.com
+turnsys.com
+uksrs.org
+url.knownelement.com
+webmail.knownelement.com
+webstats.knownelement.com
+whiteboard.knownelement.com