Update Workflow in Evrard, SqPatch, and Windblob tests for PR #37

Merging of PR #37 is blocked because it will break the Evrard test and GPU support.

The first step would be to check / update / cleanup the workflow and command-line parameters to support volume elements in all tests (src/sqpatch, src/evrard, src/windblob).

The sqpatch test has been updated to use volume elements, however it has not been tested.

Are all the steps in the new workflow correct? => Remove 'hacky**' function calls and variables.