Streaming large file uploads

[maximemulder]

Although I tested #9154 successfully with Raisinbread data, I did not manage to do so with some BIC pilot data that is too large (MRI sessions larger than 10GBs). This is not a blocker to merge the PR IMO, but it does make it impossible to use in its entirety for some projects with large MRI sessions.

I did my tests using the requests Python library. The reason why the upload failed is that the client loads the full tar file in memory, which is too large for that. The solution seems to be to use file streaming, which I tried to with the requests_toolbelt library and the streaming MultipartEncoder class. Unfortunately, I did not manage to successfully call the API while doing so.

I think there should be a discussion on streaming large file uploads with the LORIS API. Is it currently supported by the framework ? Is it compatible with existing endpoints ? How can a client use this feature ? Documentation ?