Server Launch System

Changes from V-2.0.1:

1. Fixed loading process for config files
2. Updated Internal Java version provided by pom.xml -> JDK 17
3. Added in-game text formatter of "[SLS]" before any in-game message to prevent confusion.
4. Cleaned-up unused dependencies & code.
5. Updated pom.xml to run properly
6. Migrated Code Base to the Velocity API.
7. Updated backend & Upgraded internal systems to be more efficient.
8. Added a multi-registry system for organizing server types.

• This update is a complete overhaul of the original SLS plugin; This plugin now runs off of Velocity (Which you can find here)!