Download Dataset: Add metadata as plain text

[geofranzi]

Full path as shown in hierarchy.
Split by "/".
End by ":"
devided by "tab"

Metadata/Icon URI: essdfwerzuzu
Metadata/Description/Representation_1/Title: my dataset
Metadata/Description/Representation_1/Details: my dataset is super cool

requested by NFDI4bio for export to GDA