Allow configuration of a camera angle for preset views in the Cesium Viewfinder

[robyngit]

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The new viewfinder in Cesium maps allows configuring areas of interest to highlight. The location for each "view" is set with a lat, lon, and height, but it would be nice to allow setting a heading, pitch, & roll like we do for the "home" position, see https://github.com/NCEAS/metacatui/blob/59466ab2ab25dcf1e668de3c90f4626c1faac7e8/src/js/models/maps/Map.js#L130-L159

This feature would be particularly useful for zooming into 3D datasets, e.g: