BlueMap Marker Manager

• Updating to 1.21.5

• Add 1.21.5 support
• Add config management command

• Support 1.21.4

• Add 1.21.2/3 support

• Fix fabric startup issue
• Add marker teleport attribute and command
• Suppress builder UI in console

• Fixing strange paper bug

• Add 1.21.1 support

• Converted markers & console markers are now deletable with permissions

• 1.21 support

• Fixing old marker converter (again)

• Marker sets now instantly disappear from BlueMap instead of after a restart
• Old marker converter now detects more than POI markers

(second try)