Add extra documentation to each package class

We should add extra documentation to each package class, possibly structured as attributes in order to better capture the breadth and depth of the data we collect to generate a summary table for all the things we have.
This could include new things:
- logos
- if a data file is a lock file or not
- extra support and capabilities in other tools like binary analysis, inspectors such as dependency-inspector
- core command(s) to generate lock file or install packages in dependency-inspector
- pointer to the main package management tool repo
- typical files extensions included (.py in pypi, and so on)
- extra documentation
- etc.

Beyond mere documentation, some of these attributes may have a practical use (like the command for dependency-inspector)

We should also track the relationship to other data files and manifests (important so we cant start treating these as pairs or groups). This could be an attribute, or a new class of its own that groups many datafile handler classes.