Test - Add test to check hysope II integration

#78 (closed) - Add tests to check return codes (one test / code)
#76 (closed) - Check output products and their names (FSC and QCFLAGS)
#77 (closed) - Check all different ways to launch lis (see readme explications)
Add tests to check optional parameters : water mask, tcd, div_mask
Write readme about test cases

Edited Oct 04, 2021 by Francois Gonzales