[Peek]Add wrap and formatting options for Monaco previewer (#29378)

* add options for monaco previewer

* fix formatting

src/modules/peek/Peek.Common/IApp.cs

@@ -0,0 +1,12 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace Peek.Common
+{
+    public interface IApp
+    {
+        public T GetService<T>()
+            where T : class;
+    }
+}