Firewall refactoring

- Ability to enable and disable rules in various loops
- Simplified code overall
- Port forwarding moved into openvpn loop
- Route addition and removal improved

internal/models/openvpn.go

@@ -7,3 +7,7 @@ type OpenVPNConnection struct {
 	Port     uint16
 	Protocol NetworkProtocol
 }
+
+func (o *OpenVPNConnection) Equal(other OpenVPNConnection) bool {
+	return o.IP.Equal(other.IP) && o.Port == other.Port && o.Protocol == other.Protocol
+}