Add some metadata

[mrceresa]

We should ensure that all uploaded files have correct metadata that identifies at least the project, the physicians uploading them, the hospital, the type of the file and the intented use.

We could either put them in a json, or dicomify everything...

M.

[mrceresa]

A good approach could be dicom-qi:
https://github.com/QIICR/dcmqi