Scala 3 tracking Issue

[Odomontois]

Migration steps:

• [x] Prepare project structure for scala 3 cross compilation
• [x] Migration of higher-kind core
• [x] Migration of kernel
• [ ] Migration of higher-kind macros
• [x] Migration of ce2 support
• [x] Migration of ce3 support
• [ ] Migration of ZIO support
• [x] Migration of logging

[Roman-Statsura]

I'll take on task for migration zio-logging on Scala 3, if no one minds, when pr https://github.com/tofu-tf/tofu/pull/1225 is merged

[dos65]

Attaching the curent status of having Scala3 support for each module :

• [ ] concurrentCE2
• [ ] config
• [x] coreCE2
• [x] coreCE3
• [ ] doobie
• [ ] doobieCE3
• [ ] doobieLogging
• [ ] doobieLoggingCE3
• [ ] env
• [ ] fs2CE2Interop
• [x] fs2CE3Interop
• [x] higherKindCore
• [x] kernel
• [x] kernelCatsMtlInterop
• [x] logging
• [x] loggingDer
• [x] loggingEnumeratum
• [x] loggingLayout
• [x] loggingLog4Cats
• [x] loggingLog4CatsLegacy
• [x] loggingLogstashLogback
• [x] loggingRefined
• [ ] loggingShapeless
• [x] loggingStr
• [ ] memo
• [x] observable
• [x] streams
• [ ] zio1Core
• [ ] zio1Interop
• [ ] zio1Logging
• [x] zio2Core
• [x] zio2Logging