improve datasets page to list small / easily downloadable datasets

[Remi-Gau]

https://bids-website.readthedocs.io/en/latest/datasets/index.html

• SPM MOAE dataset
• datasets used by BIDS apps for testing
• tools to create dummy datasets
• ...

[ericearl]

@Remi-Gau Let's say I knew all the dataset sizes of all of OpenNeuro... what would be the best next move or two?

...

And now I am seeing PR #651 addresses this. I'll assign myself as a reviewer there...

[Remi-Gau]

I would not consider openneuro datasets 'easy' to download or at least not that easy:

I was more thinking of datasets that are "one click downloadable":

• SPM block design: https://www.fil.ion.ucl.ac.uk/spm/download/data/MoAEpilot/MoAEpilot.bids.zip
• datasets used for testing BIDS apps: one click download from OSF (https://osf.io/9q7dv/files/osfstorage)
• downsampled fmriprep dataset use for testing the giga connectome bids app: https://zenodo.org/records/8091903
• ...

[Remi-Gau]

for the size of the datasets on openneuro, my old inventory of datasets has a size column

https://github.com/neurodatascience/cohort_creator/blob/main/cohort_creator/data/openneuro.tsv