repositories information on pulp3

Is your feature request related to a problem? Please describe.

• Currently, when doing a troubleshooting steps, it's hard to say all the files that are part of a repo or part of a CV/CCV, which could be a lot of repos in a single place.
• Also, it should be interesting print the # of packages in the metadata and the reference for the filesystem, in this case, we can guarantee the metadata is matching with the information that should be in the filesystem.
• Adding also the version of each CV/CCV it's pretty interesting
• An option for search by specific points will be also very welcome, for example:
  • by repo name
  • by cv/ccv name
  • by filename
  • by artifact
  • all the information (maybe, this will be the standard output and/or when the customer skip the flags)

Describe the solution you'd like
some simple command that will return the information that we are looking for.

Describe alternatives you've considered
This script

Start by comparing the requested repository, CV/CCV, package-count, filesystem-reference, version, and search outputs with the linked satellite_tricks script. Then inspect pulpcore's existing command structure and determine where a simple command could expose these details. Done means the requested information and search modes are defined and available through that command.