feature request: log, see if AI has done some work

[onno-timmerman]

As dyslectic person I use AI to correct my spelling frequent. But when you revisit a page you can't be 100% sure if this was corrected by AI or not. Maybe it is possible to mark fields that are done by AI so you can see exactly that this field is rewritten or written by prompt X.

I think about an interface like in wagtail-localize that shows with color marking. Or maybe like the commenting system the + icon

[tomusher]

Great idea thanks @onno-timmerman - we've been discussing logging AI requests and I've created #82 which I'd expect to be a prerequisite for making this happen.