Alignment of Integration with ML BB

[achtsnits]

following up #24 (comment)

the ML BB requires object storage to host ML models but also artifacts e.g. with the object storage bucket acting as DVC remote

with the Processing BB already able to put results to the Workspace BB team object storage some similar flow must be aligned for the ML BB

signoff: during Q3 a concept with the ML BB must be aligned allowing access to object storage of a specific team from ML BB tooling