Change pointer when hovering over feature

[steff-o]

Is your feature request related to a problem? Please describe.
It is not obvious for the user that a feature is clickable to get featureinfo.

Describe the solution you'd like
The mouse pointer should change to 'pointer' when hovering over an area in the map where the user can click to get featureinfo.

Describe alternatives you've considered
The following code can be added whithout changes to Origo, but it would be nice if it was a feature of origo.

The code snippet only works on WMS-layers if the layer has the setting className set to a unique value, otherwise it produces false positives on other layers around WMS-features (don't know why, it's documented briefly in OL documentation for foEachLayerAtPixel).

Also it only works on visible symbols where there actually is a pixel, so it won't work on hollow area symbols and hatched areas becomes "nervous".

let pointerActive = true;
document.addEventListener('enableInteraction', evt => pointerActive = evt.detail.interaction !== 'editor');

 viewer.getMap().on('pointermove', e => {
   if (!pointerActive || e.dragging) return;
   e.map.getViewport().style.cursor = viewer.getMap().forEachLayerAtPixel(e.pixel, () => true, { layerFilter: (l) => l.get('queryable') }) ? 'pointer' : '';
            });

Additional context
Add any other context or screenshots about the feature request here.