Reorganise project structure and namespaces. Remove Leaflet project and replace with Darnton.Blazor.Leaflet package.

Darnton.Blazor.DeviceInterop/Geolocation/GeolocationPositionError.cs

@@ -0,0 +1,20 @@
+using System;
+
+namespace Darnton.Blazor.DeviceInterop.Geolocation
+{
+    /// <summary>
+    /// The reason for a Geolocation error, based on <see href="https://developer.mozilla.org/en-US/docs/Web/API/GeolocationPositionError"/>.
+    /// </summary>
+    public class GeolocationPositionError
+    {
+        /// <summary>
+        /// The <see cref="GeolocationPositionErrorCode"/> for the error.
+        /// </summary>
+        public GeolocationPositionErrorCode Code { get; set; }
+
+        /// <summary>
+        /// Details of the error. Intended for debugging rather than display to the user.
+        /// </summary>
+        public string Message { get; set; }
+    }
+}