Add support for showing anycast addresses in the UI

desktop/angular/src/app/pages/spn/map-renderer/map-renderer.ts

@@ -195,6 +195,8 @@ export class MapRendererComponent implements OnInit, AfterViewInit, OnDestroy {
     data.forEach((country: any) => {
       this.countryNames[country.properties.iso_a2] = country.properties.name
     })
+    // Add special country values.
+    this.countryNames["__"] = "Anycast"
 
     this.worldGroup.selectAll()
       .data<GeoPermissibleObjects>(data)

desktop/angular/src/app/shared/netquery/pipes/location.pipe.ts

@@ -11,6 +11,9 @@ export class ConnectionLocationPipe implements PipeTransform {
       return '';
     }
     if (!!conn.country) {
+      if (conn.country === "__") {
+        return "Anycast"
+      }
       return conn.country;
     }