note: Add the ability to set template format to "compact".

[esden]

As far as the notecard documentation goes there currently only seems to be a None or "compact" formats. https://dev.blues.io/api-reference/notecard-api/note-requests/latest/#note-template

But it probably make sense to leave this to be a string so if blues decides to add more formats it will be easy to use? But we can discuss using some kind of an Enum instead if that makes more sense.

[gauteh]

Thanks. I think a enum sounds good, we could make it open-ended (there is some rust way of doing this). Or even support a Custom(String) member, but I'm not sure this is necessary. If the API doesn't change more than the rest we can just have an enum and add new members as they pop up.