First BETA with first features for ProximityChat

What's added?

Initial Release: Implemented core proximity-based chat system for Minecraft 1.21.x.

• Chat Modes: Added Shout (!) and Whisper (#) mechanics with configurable ranges.
• Admin Spy: Introduced a "Spy" mode allowing staff with pchat.spy to monitor all local conversations.
• Full Customization: Added a config.yml file to fully customize distances, prefixes, and chat formats.
• Reload Command: Added /pchat reload to update configuration changes in real-time without restarting the server.