Update group name

Upgrade to Gradle 8.7, kotlinPoet 1.16.0, Kotlinx Serialization 1.6.4…

…, Gradle Nexus 2.0.0.

Upgrade to Gradle 8.6, KSP 1.9.23-1.0.19, Kotlin 1.9.23, Kotlin-loggi…

…ng 6.0.3, Kotlinx Coroutines 1.8.0, Slf4j 2.0.12, Kotlinx serialization 1.6.3

Create .gradle

Upgrade to ksp 1.9.22-1.0.16, Kotlin 1.9.22, antlr 4.13.1