Create hubot script for managing *.labs.civictech.ca subdomain

Would be cool to allow any member of the slack channel to create official-looking subdomains on the civictech.ca site. Might make project peeps feel a little more invested. (Could also try using hubot-admin script to limit access control to coordinators, but at least they'd still be doing it in public chat and folks could witness the process for getting one and knowing who to ask.)

Existing hubot script: https://github.com/dylanmei/hubot-route53/

Docs: https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/Route53.html#changeResourceRecordSets-property