Changes for 1.17

[quiqueck]

Compiles and runs on 1.17. However, there are some important issues that need to get addressed:

• Config is saved using Jankson instead of TOML. This means that old settings are not loaded. The TOML-serializer in v5-series of ClothConfig appears to have some issues and crashes when an existing toml is read.
• DeathChestState.onBlockEntityUnload used getUnloadedBlockEntities to determine if it was called due to a chunk unload. That function (and the underlying list) is no longer available. I implemented an alternative checking wether or not the content of the chest is empty. But this may be a bad idea
• DeathChest creation works for default settings, but this definitely needs some testing
• I am using a local fabric.gradle that contains fixes dependencies that change for 1.17