[Feature] Add Dropdown Option for Extra Fields

Is your feature request related to a problem? Please describe. I didn't see an option for the extra fields to include a dropdown of predefined values. This would be helpful as we have finding statuses (open, accepted, closed) as part of our retesting process. The testers have to set these values for custom findings using a text field, which is error-prone versus selecting predefined values. It would be helpful to also have it default to one of the predefined values such as open for a finding status.

Describe the solution you'd like Allow admin users to define dropdown extra fields with predefined values and set default values.