Add some kind of --path-type [exact|glob] for delete

ATM we have that option for `download` command.

I am yet not sure how CLI should look like given that we take target file paths or URIs. I guess we could add this option and then treat local paths as globs to be expanded by python locally and on the server. For URLs we would need some custom URI schema to indicate that it is a glob for a particular dandiset (e.g. `dandi-glob:///[@][/]`)

WDYT @jwodder ?

Prompted by

- https://github.com/dandi/helpdesk/discussions/139

although not yet known if really needed in that case.