Use OC-package info in run-store function

[bdestombe]

I would be interested in an additional function in the util.py file or maybe it can be an extension of write_and_run_model. From the OC-package we know whether head and budget are stored. The function would read and store the outputs of the model in model_ds.

Additionally, I would like to see a option in the write_and_run_model function to run the model in a temporary directory. Thus within
a with statement.

with tempfile.TemporaryDirectory() as tmpdirname:
    # alter model_ws to tmpdirname
    # write packages
    # run model
    # read and store outputs in model_ds using info from the OC-package
    # revert model_ws

[dbrakenhoff]

The method get_heads_dataarray provides a heads DataArray, which can be stored in the model_ds. Also we can use the new output accessor in flopy: hobj = gwf.output.heads().

As for a temporary directory, I agree that would be a useful feature. We could add that to the write_and_run_model method I think? Shouldn't be very complicated as the flopy Simulation object has a method to change the working directory.