This change updates the Gradle configuration to utilize version
constraints to force the same dependency version across modules.

This change moves the version of the dependencies from buildSrc to
gradle.properties to prevent recompilation when changing dependency
versions.

This change extracts the configuration for test from the Kotlin library
conventions.

This change removes unnecessary dependencies on JUnit Platform launcher
from the repository. Previously, the launcher was used to bootstrap
tests for Gradle when it did not natively support JUnit Platform.

Gradle now has native support for JUnit Platform, so the dependency is
not needed anymore.

This change refactors the SC20 experiments in OpenDC to use the
standalone experiment harness as opposed to its built-in ad-hoc
experiment framework.

This change splits the opendc-compute module into two modules:

  1. opendc-compute-core
     The interfaces and APIs that represent a IaaS platform.
  2. opendc-compute-simulator
     The implementation of these interfaces using simulation components
     from opendc-simulator-compute.

This change updates the remainder of the codebase to use the
opendc-simulator-compute module for the simulation of workloads.

This change adds an opendc-simulator-compute module which contains
interfaces related to simulating compute workloads. For future changes,
we intend to decouple the simulation part from the opendc-compute
module.