2.0.0

Add multilingual support, localization, and language bundles

- Introduced language files (`lang/en.yml` and `lang/es.yml`) to support localized messages.
- Players now see join/quit broadcasts in their client language.
- Refactored message handling to load localized text from lang bundles via Nexus `Lang`.
- Updated README to document language file structure and adding translations.
- Adjusted `/vipjoinplus reload` to reload both configuration and lang files.
- Cleaned up group message logic for streamlined language resolution.

Version bump to `2.0.0` for breaking changes and feature additions.