Cyberghost support (#168)

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

internal/cyberghost/cyberghost.go

@@ -0,0 +1,23 @@
+package cyberghost
+
+import (
+	"net"
+
+	"github.com/qdm12/golibs/files"
+	"github.com/qdm12/private-internet-access-docker/internal/models"
+)
+
+// Configurator contains methods to read and modify the openvpn configuration to connect as a client
+type Configurator interface {
+	GetOpenVPNConnections(group models.CyberghostGroup, region models.CyberghostRegion, protocol models.NetworkProtocol, targetIP net.IP) (connections []models.OpenVPNConnection, err error)
+	BuildConf(connections []models.OpenVPNConnection, clientKey string, verbosity, uid, gid int, root bool, cipher, auth string) (err error)
+}
+
+type configurator struct {
+	fileManager files.FileManager
+}
+
+// NewConfigurator returns a new Configurator object
+func NewConfigurator(fileManager files.FileManager) Configurator {
+	return &configurator{fileManager: fileManager}
+}