Draft: visualize a transaction

[evansmj]

We want a way to visualize transactions that occur. Maybe we see them travel across the arrows. In real time would be nice. This may require websocket work? lnMessage supposedly connects via WebSockets already.

Currently, it is using ln.commando to get information.

How do we get notification that something happened in real time? some other ln method to subscribe to event changes or data changes from certain calls?

something like if listchannels changes, update my graphData behaviorSubject?

Note: this will be hard potentially.

[evansmj]

this depends on #35