[typescript] Opt out of suffix for enum value keys

Is your feature request related to a problem? Please describe. It's a bit odd that suffixes are applied to enum values in addition to the enum itself (when using typesSuffix):

export enum RoleSuffix {
  UserSuffix = 'USER',
  AdminSuffix = 'ADMIN'
}

Normally the suffix is useful to disambiguate the overall type when importing and using it in files, but there is not much benefit to having a suffix on the values themselves in most cases (UserSuffix, for example).

Describe the solution you'd like Add a flag to opt out of this behavior. suffixEnumValues true/false