AnubisCraft: Redone 1.16.5 - Faster World Loading

- Added Ksyxis 1.4.3 to reduce unnecessary initial spawn-chunk loading.
- On Minecraft 1.20.1, Ksyxis disables the permanently loaded 21x21 spawn-chunk area. Use FTB Chunks or Create: Power Loader for farms and machines that must run without a nearby player.
- Retained ModernFix, Smooth Boot, FastSuite and the 1.16.4 performance suite.
- Corrected outdated server version labels, MOTD and startup documentation.
- Kept the experimental Just Enough Threads mod out pending wider compatibility testing.
- No quests, quest IDs, task IDs, rewards or progression content were changed or removed.
