Use run_udf for faster prototyping.

[EmileSonneveld]

We used the custom process force_level2 to start working with, but now there is a more generic way possible with run_udf:

cwl = Path("material/force-l2.cwl").read_text()
datacube = connection.datacube_from_process(
    "run_udf",
    data=None,
    udf=cwl,
    runtime="EOAP-CWL",
    context={},
)

This way, one can test edits to the CWL without needing to commit it to master first.