Get a baseline by converting the GrabCut notebook from Earthsim into a proper Pyviz example

[maximlt]

Task to be done only if it's found that it will help to obtain a quick prototype of the doodler based on GrabCut.

Make a HoloViz-based baseline system by converting the GrabCut notebook from EarthSim into a proper examples.pyviz example using a dependency other than quest. We'll quickly abandon that baseline and make it be more like Doodler (using its algorithms rather than GrabCut), but this version will act as a good baseline/reference.

Grabcut notebook: https://earthsim.holoviz.org/topics/GrabCut.html
quest package to replace: https://github.com/erdc/quest

• Get the GrabCut notebook running locally
• Find a replacement package for quest
• Replace quest
• Create a proper pyviz example for the updated GrabCut implementation

[maximlt]

Need to wait for the next release of GeoViews (which should happen pretty soon). Otherwise the example is ready (holoviz-topics/examples#193).

[maximlt]

The example has been deployed: https://examples.pyviz.org/grabcut/grabcut.html#grabcut-gallery-grabcut