Parkour updates

Message Announcer

• 🐛 Fix Announcements now rotate correctly in sequential and random modes, conditions and join/leave checks are more reliable, and vanished players are no longer announced.
• ✨ New Announcements can now display in the action bar, as a title, or as a boss bar, and Bedrock players get adapted lines with links shown as text.
• ✨ New Announcements can now be hidden by category with /announcements, and timed tips shuffle through without repeating back to back.