Resolve "Port bash script nunet CLI to golang"

Description

• Port the following commands to Go: peer list, peer self, onboard, info, capacity, wallet new, resource-config, log
• Change pattern of commands to APP VERB NOUN
• Add --dht, --num flags for list peers command
• Format output of show capacity command in YAML manner (suitable to change)

Checklist

• I have update updated the @version string in main.go. See https://semver.org/
• I have update CHANGELOG.md with a short description of changes.
• I have run swag init to update the swagger docs.

Closes #220 (closed)