Make connected graphs of contributors to projects

[matthewfeickert]

@jpivarski had made visualizations of connected graphs of contributions in the ecosystem of projects that was motivated by parts of @henryiii's https://github.com/henryiii/ghimpact. However, it was noted that it was missing some components from Innovative Algorithms working groups that should be on GitHub. It would be good to add these and to also create dual graphs for IRIS-HEP and non-IRIS-HEP contributors and make them public (maybe not here but another repo / website).