Automatically generate BIDS compulsory agnostic files and update them if they already exist

[vinferrer]

comes from #185. When a heuristic file is provided and data is bidsdifyed agnostic files (README, participants.tsv and dataset_description.json) should be generated

Detailed Description

When a heuristic file is provided and data is bidsdifyed agnostic files should be generated:

• dataset_description.json
  Fields
  - Name (Required)
  - BIDSVersion (Required)
  - DatasetType (Recommended)
  - License (Recommended)

• Participants.tsv
  Fields
  - participant_id (Required)
  - age (Recommended)
  - sex (Recommended)
  - handedness (Recommended)

• README

Context / Motivation

comply BIDS 1.4 standard

Possible Implementation

Create one function per file where we check if the file exists in the dataset dir, in case it doesn't generate it and cover at least the required fields, preferably also the recommended and add them to the pipeline.

[smoia]

Thank you @vinferrer !

Indeed, until now we weren't creating metadata, relying on other tools (DICOM based) to do so. But if physiological files should be shared on their own, we need to create them.

[eurunuela]

Thanks @vinferrer ! I guess it automatically closed when the #244 merged.

[vinferrer]

Yeah don't worry it happens, I was looking for the issue and didn't find it so i supposed it was close

[vinferrer]

We should close this issue

[eurunuela]

I'd wait for #256.