Adding CI to ROC plots

[m-makarious]

Please make sure that this is a feature request.

System information:

• GenoML Version: v1.b11
• GenoML Installed from (source or binary): Source
• Are you willing to contribute to this request? (Yes/No): Yes

Describe Current Behavior/State and Recommended Feature Request:
Right now, no additional CI information is offered when outputting the AUC

Will this change the current API? How?
Nope

Who Will Benefit from this Feature?
I think everyone

Any Additional Information?