Add cloudposse's github-status-updater

[aslafy-z]

See https://github.com/cloudposse/github-status-updater

[terrytangyuan]

Thanks for the suggestion! I don't think it's specifically related to Argo besides one example in the repo. If you disagree, please clarify.

[terrytangyuan]

Would you like to submit a PR and add it to the list?