Blazor server and client apps. With data service mocks

WotBlitzStatisticsPro.UI/ExampleJsInterop.cs

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+using Microsoft.JSInterop;
+using System.Threading.Tasks;
+
+namespace WotBlitzStatisticsPro.UI
+{
+	public class ExampleJsInterop
+	{
+		public static ValueTask<string> Prompt(IJSRuntime jsRuntime, string message)
+		{
+			// Implemented in exampleJsInterop.js
+			return jsRuntime.InvokeAsync<string>(
+				"exampleJsFunctions.showPrompt",
+				message);
+		}
+	}
+}