Reviewing Colossus upload process

[bedeho]

Background

Uploads are failing quite frequently,

https://github.com/Joystream/atlas/issues/3240#issuecomment-1244144563

and often with poor information about why

https://github.com/Joystream/joystream/issues/4279#issuecomment-1242963023

and its hard to test if things are working

https://github.com/Joystream/joystream/issues/4285

Proposal

• Review upload handling on Colossus side, try to detect if there are any room for making it more robust to faults or misconfiguration
• Review how to enhance rich data sharing with operator, lead and possibly even end user application (but be ware of security here)
• Review if adding additional tests would be useful.

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