Bedevere shouldn't add "awaiting review" label on draft PRs about bedevere HOT 3 CLOSED

I think the main change is on here:

https://github.com/python/bedevere/blob/main/bedevere/stage.py#L104
Here, we're handling the "pull_request.opened" webhook event, and apply either the awaiting review or awaiting core review label.

Since the webhook event sends the draft status as True or False, we can use that to determine whether or not we should apply the label when the PR is opened.

if event.data["draft"] is False:
# apply label

We should also add apply the label when the PR was changed from draft to ready to review. So we may need to add the decorator @router.register("pull_request", action="edited").

from bedevere.

And I guess we should also handle the situation when the PR was changed from "ready to review" back to the "draft" state.

from bedevere.

I'm happy to try to make this change myself (maybe with some guidance as I never touched this codebase before :) )

from bedevere.