* Revamped the trace system. All TraceFormat files are now in the api module. This fixes some problems with not being able to use types of traces

* applied spotless

This change updates the OpenDC VM trace format to incorporate the VM
interference model in the trace format itself. This makes sense since
the model is tightly coupled to the actual trace that is being
simulated.

This approach has as benefit that we can directly load the
interference model from the workload trace, without having to resolve
the model seperately (as we did before).

This change optimizes the OpenDC VM trace format by removing
unnecessary columns as well as optimizing the writer settings.

The new implementation still supports reading the old trace format in
case users run OpenDC with older workload traces.