Using this script:
1. Copy scripts/launchd/io.gogs.web.plist into /Library/LaunchDaemons
2. The script assumes Gogs is running under 'gogs' user and group, modify
/Library/LaunchDaemons/io.gogs.web.plist if you want to user different user.
3. The script assumes Gogs is installed in /Users/git/gogs, modify
/Library/LaunchDaemons/io.gogs.web.plist if you installed Gogs in different
location.
4. Once you are sure that running Gogs manually via `gogs web` works fine, run
it as a launchd service with:
sudo launchctl load -F /Library/LaunchDaemons/io.gogs.web.plist
From now on launchd will ensure Gogs is running, eg. when system is restarted.