Add a "catalog download xxxx" command
Use case: I'm in a bar with wifi, and I'd like to fill in a cache directory, that I would then put into a USB stick, so I can then go to where the server is (without Internet) and install everything using the --download-cache
option.
For now, I'll install the package on my laptop to fill in my local cache, but that's sort of hackish.
BTW, we may have a command to see which packages we have in the cache.