[TRACKER]: CLI command for migrating jobs and folders of files/notebooks

[ericvergnaud]

Scope

• [x] #3514
• [ ] #3515
• [ ] #3516

Details

Since the entry point for the migration of workspace source code is always a notebook, the dependencies discovered via the notebook should be propagated to the file migrator, rather than recomputed.

[nfx]

per se, we shouldn't care if it's a source file. Needs to align with LSP