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 reimplements the performance interference model originally
implemented for the SimpleVirtDriver class, for SimHypervisor.

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

This change adds an implementation of the VirtDriver interface that uses
the functionality provided by the opendc-simulator-compute module.

This change creates an implementation of the BareMetalDriver interface
using the simulation logic of SimMachine. This implementation will
eventually replace the SimpleBareMetalDriver implementation.

This change adds explicit visibility modifiers to the public interfaces
and enables Kotlin 1.4's explicit API mode.

This change moves the OpenDC simulator codebase to the org.opendc
namespace of which we control the domain. Previously, we used the
com.atlarge package of which we did not control the domain, which might
lead to difficulties in the future.

This change moves the OpenDC modules previously living in the simulator/opendc
directory to the simulator directory itself given that we do not make a
distinction between OpenDC and odcsim anymore.