Updated rootProject.name and JDBC URL configuration to use template placeholders for better flexibility and consistency. Removed unused code and initialization block from Database.kt to improve readability and maintainability.
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.
