Include settings for pro fix callouts

[pattonwebz]

This PR brings the settings for the pro fixes into the free plugin and flags them as upgrade features for users. The run method is empty for pro fixes and the type is set to none.

It also adds a helper to generate pro links and some JS to put a pro flag on settings on the fixes page.

Checklist

• [ ] PR is linked to the main issue in the repo
• [ ] Tests are added that cover changes