Add EuroOffice support modeled after OnlyOffice implementation

Agent-Logs-Url: https://github.com/nextcloud/all-in-one/sessions/bd87016f-c321-49f1-93dd-d8baab660d3f

Co-authored-by: szaimen <42591237+szaimen@users.noreply.github.com>

Containers/apache/Caddyfile

@@ -51,6 +51,15 @@ http://{$APACHE_HOST}.nextcloud-aio:23973, # For Collabora callback and WOPI req
         }
     }
 
+    # EuroOffice
+    route /eurooffice/* {
+        uri strip_prefix /eurooffice
+        reverse_proxy {$EUROOFFICE_HOST}:80 {
+            header_up X-Forwarded-Host {http.request.hostport}/eurooffice
+            header_up X-Forwarded-Proto https
+        }
+    }
+
     # Talk
     route /standalone-signaling/* {
         uri strip_prefix /standalone-signaling