feat(vars): $randomActiveViewer Enhancements (#2805)

[phroggster]

Description of the Change

• Accept either a single custom role name or an array of multiple custom role names for inclusion filtering..
• Accept either a single user name or an array of multiple user names for exclusion filtering.
• Add a parameter to exclude a single custom role name or an array of custom role names.
• Add a parameter to return either or both the username and/or id.
  • displayName is unavailable here though, sadly.
  • Good thing there's a variable available for that. 😁
• Uses $arrayFrom[..., ...] for one readable example of array parameters.

Applicable Issues

#2805

Testing

pending a rousing of the troops.

Screenshots