Adding support for disputed administrative boundaries

This is adding new optional property to administrative boundaries that indicates to rendering how to handle disputed boarder.

docusaurus/docs/reference/admins/administrativeBoundary.mdx

@@ -26,7 +26,8 @@ Administrative Boundaries are borders surrounding Administrative [Localities](lo
   </tr>
 </table>
 
-An Administrative Boundary defines the division between two Administrative [Localities](locality).
+An Administrative Boundary is typically an officially defined border between two Administrative [Localities](locality).
+In light of geopolitical issues, some Administrative Boundaries can represent standalone disputed or treaty lines and therefore do not coincide with the border of an Administrative Locality.
 The Administrative Boundary and two Administrative Localities do no share common geometry.
 
 ## Schema

schema/admins/administrativeBoundary.yaml

@@ -20,3 +20,11 @@ properties:
       maritime:
         description: Flag that specifies if the boundary is maritime (i.e., a boundary at a particular distance from a jurisdiction's coastline)
         type: boolean
+      geopolDisplay:
+        description: Optional value that indicates if the boundary needs special rendering logic
+        type: string
+        enum: [disputed, hidden, visible]
+        "$comment": >-
+          disputed     = Indicates that an Administrative Boundary is subject of a dispute between two or more countries
+          hidden       = Indicates that the Administrative Boundary must not be display though coinciding with an Administrative Area
+          visible      = Indicates that the Administrative Boundary is to be displayed (i.e. used to override a maritime=yes flag)