[Feature request] comment update with api

[pjh4993]

Currently we are using heartex for labeling our dataset.
While using heartex, we find out that the only way to communicate with them is comments.
While we are giving feedback to labeler with our validation data, we were have to comment them for each labeling cases manually.
Instead of this, it would be great if we can use api request for update comment to each annotator's result.