local valiator dev tools (with registry support)

[dckc]

IOU a copy of my klunky Makefile, but I'd rather not inflict it on any / many more devs.

See also:

https://github.com/rchain-community/rchain-docker-shard

@tgrospic adds:

in client js example is also compose file (with bonds and wallets) for local testing.
https://github.com/tgrospic/rnode-client-js#run-rnode-with-docker

[dckc]

see also previous work on rclient register command for handling registry URIs.

[dckc]

@tgrospic I'm struggling to make status requests via http using the docker-compose.yml from rnode-client-js. Clues?

p.s. turned out I had a VPN running that was getting in the way.