Draw arrows between components on architecture diagram

[holly-cummins]

Two challenges:

Drawing the arrows

This would be hard with vanilla javascript, but maybe a library can help.

Populating the arrows

Once interactions have happened, we know about the relationship, but what about before?
We can maybe track a dependency in the pom, but many relationships would be via REST. We could scan for common port numbers on both sides, but that's a lot of work.
If we used stork, that might also give us some port numbers we could introspect.