Add new Dynamic DNS provider: dy.fi
Dy.fi is a small dynamic service provider exclusive to Finland (i.e., the service requires that the client IP locates to Finland).
The provider can be implemented with a simple custom rule:
result_match: nochg|good IP
However, it's easier if one can select the correct one from the dropdown. Additionally, error messages are converted to human readable strings.
The new provider is implemented here: https://github.com/pfsense/pfsense/pull/4514