dev(sg): add support for checking version of any deployment
Created by: bobheadxi
Adds support for checking the version of any deployment:
❯ sg live -help
USAGE
sg live <environment|url>
AVAILABLE PRESET ENVIRONMENTS
dot-com
k8s
❯ sg live https://demo.sourcegraph.com
✅ Done
💡 Live on "demo.sourcegraph.com": v3.29.0