Add Label: automate height

[StableLlama]

For the Add Label node I must give it a height for the label.
But my label might contain only little text or many lines of text, so I can't give it a fixed height and it should choose the height by itself to fit all of the text.

It would be great when this could be implemented (e.g. with a value of "-1" meaning that it should choose automatically and any positive integer is a fixed height as it is currently already)