Player Freeze

feat: update player-freeze to v1.1

• Add colours to all default config messages
• Update api-version to 1.21
• protection_level is reloaded with config
• Separate /freeze and /unfreeze into distinct commands
• Improved player freezing logic to be more reliable
• Create default options if they don't exist in config

Relevant git commit: https://github.com/Woolyenough/paper-player-freeze/commit/c3a9dddf857ca976d1d9f02e18e66a8a41d64a36