Network topology graph

[edufschmidt]

As a user, I would like to be able to see a topology graph of each network managed by Drago, with nodes and edges corresponding to interfaces and connections, respectively.

Possibly, there could be a global graph showing data from multiple networks (e.g., in scenarios in which a node has more than one interface).

See react-force-graph, and the implementation present in Drago version 0.1.0.