Add project files.

BasicDemo/Pages/Index.razor

@@ -0,0 +1,16 @@
+@page "/"
+@inject IConfiguration _config
+
+<h1>Hello, world!</h1>
+
+<p>
+    MySetting Value: @mySetting
+</p>
+
+@code{
+    string mySetting = "";
+    protected override void OnInitialized()
+    {
+        mySetting = _config.GetValue<string>("MySetting");
+    }
+}