convert enum to str when referencing

[cdoern]

click does not support an enum type for click.choice. This means that in the CLI we need to somehow get from str -> enum to pass to the library.

Adding this use_enum_values, allows a user to specify things like nf4 and None as strs in their config.yaml and they are seen as valid by the library.

[JamesKunstle]

Understood once I read the docs:

use_enum_value:

Whether to populate models with the value property of enums, rather than the raw enum. This may be useful if you want to serialize model.model_dump() later. Defaults to False.

[RobotSail]

LGTM