hekate v6.4.1 & Nyx v1.8.1

Supports booting ALL current CFWs, Android, Linux and payload tools. No more SD card removals
Latest HOS supported: 21.0.0
hekate v6.4.1 hotfix changes
- HOS 21.0.0 support
- Fixed NOGC patches for HOS 21.0.0 (v6.4.1 hotfix)
- TUI now has a
Load Nyxoption in case the SD card was inserted later or init temporarily failed. - HOS: Sanitized MC carveouts for very old versions
- L4T: Fixed TSECB permissions for TSEC GSC
- Various fixes and improvements
emuMMC Changes
- HOS 21.0.0 support As always based on https://github.com/m4xw/emuMMC