muteAuthor method
Implementation
Future<int> muteAuthor(String shortLink) async {
ModeratorEntry? target = findModeratorEntryByShortLink(shortLink);
if (target == null) return -1;
final surl = target.siteUrl.isNotEmpty ? target.siteUrl : _homeSite;
//TODO add OMNIdrops
return await _sites[surl]!.muteAuthorToQueue(target);
}