[Blocked] Make creating virtual datasets on publish/upload optional

[fm3]

URL of deployed dev instance (used for testing):

• https://___.webknossos.xyz

Steps to test:

• abc

TODOs:

• Upload
  • forbid layers to link
• UploadToPaths
  • create as virtual first, set non-virtual on finish? or is the pending attribute enough?
  • leave out datasource in response, instead return just path in binaryData
  • in this case the libs create single symlink (or copy/move according to transfer mode)
  • libs still need commonStoragePrefix (it’s the binaryData folder now)
    • trouble: if the source dataset doesn’t have symlinks but just paths, it stays that way
  • but it can be removed from the protocol with webknossos! → follow-up
• ExploreAndAdd
  • can still create virtual, yolo
• Compose
• DuplicateToOrga
  • can still create virtual, yolo
• in dataset settings view, show directory name for non-virtual

2h40m

Issues:

• fixes #

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(Please delete unneeded items, merge only when none are left open)

• Added changelog entry (create a $PR_NUMBER.md file in unreleased_changes or use ./tools/create-changelog-entry.py)
• Added migration guide entry if applicable (edit the same file as for the changelog)
• Updated documentation if applicable
• Adapted wk-libs python client if relevant API parts change
• Removed dev-only changes like prints and application.conf edits
• Considered common edge cases
• Needs datastore update after deployment

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch virtual-optional

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[fm3]

Blocked by open discussion