Expose File-Size-64 checksum in the importer-cli advanced help (rebased onto develop)


This is the same as gh-2886 but rebased onto develop.

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Noticed while reviewing https://github.com/openmicroscopy/ome-documentation/pull/917. This emergency PR lists @mtbc's new checksum algorithm (for in-place imports) in the CLI advanced help.

Check:
- ``importer-cli --advanced-help``
- ``bin/omero import --advanced-help``