Description

FadePersist.lua always freaks out if you disable ElvUI action bars.
Should add some checks to see if they're enabled, before loading the module.
Should also show a warning/disclaimer in the options gui explaining why the fade persist module is disabled.

To reproduce

1. Have ToxiUI ActionBar Fade enabled
2. Disable ElvUI action bars

Acceptance criteria

• Disabling ElvUI action bars does not throw a error
• Options GUI (/tx settings) displays a warning/disclaimer for that