Fix #64, update build, compatibility with 1.20-1.20.4

[Fourmisain]

• fix config not being loaded/initialized when using Quick Play

As mentioned, fixes #64

---

I also updated the build a bit and made the mod compatible with 1.20 again:

• update to loom 1.5, gradle 8.7
• separate build and fabric mod dependency versions
• dehardcode java version (now just 1 single number in gradle.properties)
• enable gradle and build deprecation warnings
• make compatible with jitpack (because why not)

A few notes: Every property in the gradle.properties is now expanded in fabric.mod.json and the mixin.json automatically. The properties are set as inputs for the gradle task, so the any change will actually rerun the task.

I removed the Cloth Config version range for backwards compatibility and because the mod does their own range check anyway. Also removed the "2" from Cloth Config. This has been done quite a while ago, the mod still provides cloth-config2 though.

Lowered Fabric Loader requirement to 0.14 just in case, though I think Fabric API requires 0.15 anyway.

[Bernasss12]

Thank you again for stepping in :) I will merge, build it and publish it shortly. Hopefully I set up GitHub to do that for me in the future.