support structured as json and better file param

[dsavchenko]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 53 lines in your changes missing coverage. Please review.

Project coverage is 22.07%. Comparing base (bfe171d) to head (8c01a61).
Report is 51 commits behind head on master.

Files with missing lines	Patch %	Lines
nb2workflow/galaxy.py	0.00%	53 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #215      +/-   ##
==========================================
+ Coverage   20.89%   22.07%   +1.17%     
==========================================
  Files          36       37       +1     
  Lines        3685     3969     +284     
==========================================
+ Hits          770      876     +106     
- Misses       2915     3093     +178     

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[dsavchenko]

It seems to do its job with adaptations in https://gitlab.renkulab.io/astronomy/mmoda/photoz-euclid/-/merge_requests/7
(to finalise)