Idea: API/remote server component

[alexellis]

Building an API or remote/server component could be useful for some use-cases around batching. This could also decouple slightly from Swarm allowing other back ends to be built into the binary such as Kubernetes.

Considerations:

• Some level of authentication would be needed such as TLS or basic auth.
• API design - parity with jaas run is a good start, generic object model would be ideal
• For simplicity the changes may require server component to run in background even for "local" calls
• a 1.0 release should be cut first