Update cwl and yml files

This merge request updates the file locations for the run.cwl and run.yml in accordance to the ARC specification. It also updates the naming for the main workflows and adds performer metadata to the run.yml.

I also chose a workflow instead of a command line tool for the run.cwl, since in my opionion it is cleaner than running a command inside the run.cwl that just executes the workflow.cwl with the run.yml. The association with the run.yml is given by the location in the same folder. Let me know, what you think about this solution. The corresponding discussion can be found here