Updated the Kotlin multiplatform plugin to version 2.1.0 and added the necessary dependency for the Kotlin-simple-logging library. Introduced new components, `Database.kt` and `Migrations.kt`, to manage database connections and migrations, along with adjustments to build configuration artifacts.
Upgraded the Kotlin version from 2.0.0-RC1 to 2.0.21 and adjusted various dependencies to their latest versions. Added new Maven repository URLs and updated `.idea` project artifacts to reflect the new versioning and project setup.
