Support dataprep in object store

[philipp-fischer]

Since we are now working with sqlite databases for dataprep, currently this doesn't work in object storage.
We could implement this by creating the sqlite in local location (SSD/RAM) and then upload it.

[radulescupetru]

@philipp-fischer Any update on this?

[voegtlel]

Quickly checked it and created a PR. If the build runs through, you're welcome to test the branch :)