Launchpad ingestion to archive endpoint

Wire up launchpad ingestion to charmstore filling out new api/models.
In the usage for logging-config please provide an example or the possible config values. Users should not have to read juju/loggo code to know how to properly write this string.  The problem is made worse since logo.ConfigureLoggers silently rejects improperly formatted/non-sense strings.

Having the user provide the config string is very flexible but demanding.  What about having --trace, --debug, etc., that applies to the 'charmload' module?