connection from data harmonization to datamite data catalogue

Hi! As agreed during the code/hackathon, we need to allow users to select datasets from datamite from the data harmonization GUI. Our GUI: https://dpi-enabler-ui-datamite.apps.dcw1.paas.psnc.pl/ Can you describe the steps we need to take to list datasets and get datasets from datamite? @jordiarjona anything else you want to add to the scenario?