Check naming convention of enums

Currently, there are several rules ensuring adherence to a naming convention. E.g., for classes, abstract classes, methods, members, constants and so forth. However, there is no rule which checks whether an enum complies to any naming convention. The is rule S00101, but it does only check classes. There is a issue from 2014 in the bugtracker (https://jira.sonarsource.com/browse/SONARJAVA-689), but no description is available and the Google Groups thread I wasn’t able to find.
So I’d like to suggest to either create a specific rule for enums or to adapt the S00101 to also handle enums. If you’d be willing to accept a pull request even without an RSPEC number, please let me know