Update to PM5

[inxomnyaa]

This pull request aims to update the plugin and libnbs to PM5. Changes:

• Now uses the Commando virion for commands and subcommands
• customui is abandoned in favor for FormAPI
• protocol version checks have been removed
• Songs now stop playing if nobody is online
• New subcommands
• • pause stops all songs from playing (globally)
• • select allows playing a specific song (globally)
• • other commands like volume, next have been ported to subcommands and show in tab completion
• Options displayed in the radio UI are now permission based
• Radio UI shows the currently played song if any
• Loading songs now logs errors for all failed songs properly
• Added typehints and return types (Bumped PHP to 8.1)