Automate Transfers: Can start transfers from subdir of ts_path
Automate Transfers: Can start transfers from subdir of ts_path

Add ability to start transfers from directories that are not the immediate
children of ts_path.  Depth param specifies how many directories to go down
before creating transfers.  Default is 1, which mimics old behaviour and
creates transfers from the children of ts_path.

artefactual/automation-tools,artefactual/automation-tools,finoradin/automation-tools