Metadata about an artifact, such as what plugins are contained in the artifact, and what other artifacts can use
the plugins in this artifact. For example, we could have an etl-batch-lib artifact that contains
20 different plugins that are meant to be used by the application contained in the etl-batch artifact.
In this case, the artifact meta for etl-batch-lib would contain details about each of those 20 plugins, as well
as information about which versions of the etl-batch artifact can use the plugins it contains.