Improve help menus ; update vendor deps

[0pcom]

• vendor commits from earlier PRs in services, sd, and dmsg to include those changes in cmd/skywire-deployment

https://github.com/skycoin/dmsg/pull/254 https://github.com/skycoin/skywire-services/pull/54 https://github.com/skycoin/skycoin-service-discovery/pull/22

• fix help menu for setup-node
• revise help menu for cmd/skywire

These changes will now include the runtime dependencies and example of setup configuration for core services in the help menu of the respective subcommands; reflecting the documentation at https://github.com/skycoin/skywire-deployment/