FR: Support SRV records

[varac]

It would be great if this provider would suport SRV records.

[Sighery]

I'll try to look into this sometime this week, but no promises. I think SRV might have been one of those records that had some unique extra fields, that back in the day proved challenging to implement in a generic manner (at least for me, since I've only ever used Go for these two projects so I'm not too knowledgeable). Now that generics support was added to Golang, it might be easier to implement all the record types in a generic manner while still allowing each record to have all the fields it needs with their proper types.

If you want to try your hand at it, the functionality will have to be implemented in the gonjalla package, as this provider is simply a Terraform-specific wrapper over that library.