How can I Create a spatial binning similar to or directly using Uber H3 from QGIS UI? Are there plugins available to achieve the desired task?
You can play with it using my #30DayMapChallenge hexagon demo https://github.com/ThomasG77/30DayMapChallenge/blob/master/day4_hexagons/data/h3-processing.py
Except the fact I do no use an UI, I combine both QGIS and Uber H3 Python library.
I clearly do not use all parts of the H3 Python library. I suppose the example could help you getting started.