Support stop/start/restart of a specific service of a balena application.

[janvda]

It would be interesting to extend the existing node-red-contrib-balena nodes with nodes that allow to stop, start, restart a specific service of a multicontainer balena application. Similarly as can be done via the BalenaCloud dashboard.

So I think for this a node-red node wrapper is needed for the following HTTP API requests:

• https://www.balena.io/docs/reference/supervisor/supervisor-api/#start-a-service-post-v2applicationsappidstart-service
• https://www.balena.io/docs/reference/supervisor/supervisor-api/#stop-a-service-post-v2applicationsappidstop-service
• https://www.balena.io/docs/reference/supervisor/supervisor-api/#restart-a-service-post-v2applicationsappidrestart-service

For this it might also be interesting to have a node that allows to retrieve a list of all balena services running on the balena device.

So I think for this a node-red node wrapper is needed for following HTTP API request:

• https://www.balena.io/docs/reference/supervisor/supervisor-api/#get-v2statestatus

[janvda]

I would suggest that for the first version: the actual service name is specified in the msg.payload of the incoming message for the start, stop and restart nodes.

[janvda]

I have created the 4 nodes in my branch https://github.com/janvda/node-red-contrib-balena/tree/service_start_stop_nodes