Make test data compatible with debug output of ewms-pilot

[mlincett]

The current format of test data is not perfectly compatible with the debug output of ewms-pilot. In particular:

• in- pickles of ewms-pilot are dictionaries already containing reco_algo and pframe, while the current CI pipeline expects a bare pframe in the pickle, and wraps it in a dictionary with reco_algo with an auxiliary script. Should we drop the "old" format and update the test data for millipede_original?
• the out pickle for comparison is expected to have a filename in the form *.out.pkl while ewms-pilot outputs something in the form f"out-{HASH}.pkl". We may want to make this consistent.

Additional remarks:

• the scan of hese_event_01.json outputs a file named run00127907.evt000020178442.HESE_1.npz but is supposedly a simulated event. I find it a bit confusing.