Fabric Language Kotlin – Fabric Language Kotlin 1.8.0+kotlin.1.7.0

– Fix release (modmuss50)
– Migrate to groovy buildscript, add changelog generation, add auto github/modrinth publishing. (modmuss50)
– Update to Kotlin 1.7.0 and bump coroutines and serialization (#73) (Jakob K)
– Merge pull request #72 (Jakob K)
– Add atomicfu library (#71) (Jakob K)