Add the HTTP Client to the flow

[colethienes]

Amazing project! Been using it for a week now and I love the architecture of the entire system.

If it's not too drastic of a change, it would be nice to have the HTTP client optionally added to the flow so that it is possible to send json requests through the client to the frontend. I would like to be able to deploy the client image in the swarm yaml. This would have the benefit of fully containerizing gnes and minimizing dependencies for the end user. Also, I've seen a few people have problems with leveraging the bytes generator directly.

Could potentially add to the service map then to the node graph?