Split project's build.gradle.kts into several files

[RezMike]

Right now build.gradle.kts contains not only the project configuration script, but also classes and code (e.g. DenoTestTask, MicroAmper, extensions for them) that can be placed in separate files for better readability

[RezMike]

Hmm, it looks like most (if not all) korlibs libraries use the same big configuration script 🤔