2.0.0-beta.4+1.18.1: [2.0.0-beta.4] Add gui customisation

- You can now modify text and icons used in guis
- Added `client_model_or_head` style! It displays as model for compatible clients and as player head for others
- Changed default grave style to `client_model_or_head`
- You can now disable remote breaking/protection removal from graves
- Disabled default soulbound autodetection, it will be removed in future release! (You should add enchantment id directly!)
- Fixed some bugs