Migrate auto comments to use Stephen's Comment Templates Context Menu

[gunr2171]

https://stackapps.com/questions/9426/comment-templates-context-menu-an-auto-comments-user-script
https://chat.stackoverflow.com/transcript/message/57620402#57620402

This seems like a more modern and feature rich alternative to AutoReviewComments. Of course, this will be a breaking change, as the new userscript allows for new variables that the old script does not support.