Cyberghost support (#168)

* Host finder CLI for cyberghost
* Resolver program updated with Cyberghost data
* Gluetun cli clientkey subcommand

docker-compose.yml

@@ -21,7 +21,7 @@ services:
       - OPENVPN_TARGET_IP=
       - TZ=
 
-      # PIA, Windscribe and Surfshark only
+      # PIA, Windscribe, Surfshark and Cyberghost only
       - REGION=Austria
       - USER=js89ds7
       - PASSWORD=8fd9s239G
@@ -38,6 +38,10 @@ services:
       # Mullvad and Windscribe only
       - PORT=
 
+      # Cyberghost only
+      - CYBERGHOST_GROUP=Premium UDP Europe
+      - CLIENT_KEY=
+
       # DNS over TLS
       - DOT=on
       - DOT_PROVIDERS=cloudflare