3.0.0-beta.3+1.20.1: [3.0.0-beta.3] Tweaks, fixes and new logo

- New logo! Now it represents current default grave style, instead of 2.x client one.
- Player made gravestones now work as 9-slot containers.
- Grave models can now display items. Updated default to do so.
- Added option to move graves on top of fluids. Disabled by default.
- Added ability to change how default gravestone item looks. Changed default to skeleton skull.
- Added geyser compatibility setting, making graves display as skulls to bedrock players.
- Tweaked UI texture.
- Fixed bugs.