Confidence scores

[BramVanroy]

Is your feature request related to a problem? Please describe.
It could be fruitful to have access to the confidence of the model in its predictions.

Describe the solution you'd like
In an ideal world, confidence scores for everything (i.e. for POS, DEP, MORPH, etc.) on the token level. But I am mostly interested in sentence-level measures, e.g. dependency tree confidence scores for the whole tree.

Describe alternatives you've considered
I have not found alternative parsers that give easy access to this feature.

Additional context
This is a continuation of our discussion on Twitter: https://twitter.com/stanfordnlp/status/1760026653370331647

[AngledLuffa]

I do not believe this will make it into the next release, which is imminent, but I will work on it next week or the week after if possible.