Resizable splitPanes with fixed top

[lroal]

Is your feature request related to a problem? Please describe. The idea is to have a map always on the top and a list below to filter objects in the map. The map should always stay on top as you are scrolling the list below. The user should be able to adjust the height of the map with a handle. Something similar to this https://antoniandre.github.io/splitpanes/

Describe the solution you'd like Perhaps a new component called splitPanes or some kind of header similar to navbar but with custom content and handle for resizing..

[lroal]

Perhaps a similar functionality for landscape mode (fixed left or right)