code-review-bot to accomodate new warning_message parameter in `rustfmt.yml`

[snowmanstark]

Need to update code-review-bot to accomodate new warning_message parameter in rustfmt.yml as per #1652981 to accomodate the patch

[sylvestre]

Thanks :) Could you please take care of the patch ?

Should be something like if warning_message is present, use it otherwise, use the description (the current behavior)

[snowmanstark]

Sure, I'll try to get my head around code-review-bot and see where I could implement that.

[sylvestre]

@snowmanstark are you still interested in finishing this? thanks