[Design Proposal] Hiding native 3d buildings within a specific perimeter

# Design Proposal: Hiding native 3d buildings within a specific perimeter ## Motivation Presently, native 3d buildings are visually merging/interfering with custom 3d building that one may want to create to improve the native buildings in a specific area. ## Proposed Change Allowing to clip buildings within a specific perimeter so that surrounding native building are preserved while we have a clean perimeter to create our custom buildings. ## API Modifications A way to provide coordinates of the perimeter where you don't want native 3d buildings to show. ## Rejected Alternatives Clipping an area directly via tile server : you need control over the tile server each time for a project you need to simply have a custom building somewhere.