Add AbstractGraph interface via extension to PowerNetworkMatrix type?

[jd-foster]

Would you consider an extension to PNM that implements the AbstractGraph interface to certain (all?) PowerNetworkMatrix subtypes?
I imagine it would focus on implementing interface functions through the SparseMatrixCSC type.

The purpose would be to open up some immediate network analysis using the algorithms and plotting aspects of the Graphs.jl ecosystem, such a shortest paths and cycle decomposition.

[jd-lara]

We would need to assess the relative benefit of an additional dependency vs implementing some of those capabilities natively.