Things that need to be done for production deployment:

• Create Extension: mediawiki.org page for developers and people who will install or configure the extension.
• Create Help:Extension: mediawiki.org page for the end user documentation. Cross-link it with the above.
• Request a project in Phabricator if none exists yet.
• Get the extension code in Gerrit.
• Show community support/desire for the extension to be deployed.
• Request (and respond to) a product review, if applicable.
• Request (and respond to) a design review, if applicable.
• Open (and respond to) a Security-Reviews ticket blocking this.
• Make sure the extension is automatically branched.