Did:orb

Full Title

Description of the did:orb method implementation.

Context

still working on the implementation. I can let you know once we have the basics ready.

• make targets that produce the binary (make orb) and the docker image (make orb-docker).
• snapshot docker images here: https://github.com/orgs/trustbloc-cicd/packages/container/package/orb
• once there is a release, there will be release images here: https://github.com/orgs/trustbloc/packages/container/package/orb (currently 404 due to no releases).