Added Tests and Refactored code (#2129)

* Added Tests and Refactored code

* removed un-used file

* delete test files when test completes

* removed extra build configs

* added clean-up method

* removed unused variable

* re-added removed attributtion

* added error handling and move strings to string resource

* added error handling to file explorer view model

* moved varible assignment to if statement block

* removed savin of settings file from the UI

* re-added open source notice

* added missing controls for powerrename and fancy zones

* removed dead coded

* remove un-used configuration

* added error handling for file saving and updated powerreanme constructor

* removed added configurations

* added settings state

src/core/Microsoft.PowerToys.Settings.UI.Lib/PowerRenameLocalProperties.cs

@@ -0,0 +1,53 @@
+// 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.
+
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Microsoft.PowerToys.Settings.UI.Lib
+{
+
+    public class PowerRenameLocalProperties
+    {
+        public PowerRenameLocalProperties()
+        {
+            PersistState = false;
+            MRUEnabled = false;
+            MaxMRUSize = 0;
+            ShowIcon = false;
+            ExtendedContextMenuOnly = false;
+        }
+
+        private int _maxSize;
+
+        public bool PersistState { get; set; }
+
+        public bool MRUEnabled { get; set; }
+
+        public int MaxMRUSize
+        {
+            get
+            {
+                return _maxSize;
+            }
+
+            set
+            {
+                if (value < 0)
+                {
+                    _maxSize = 0;
+                }
+            }
+        }
+
+        public bool ShowIcon { get; set; }
+
+        public bool ExtendedContextMenuOnly { get; set; }
+
+        public string ToJsonString()
+        {
+            return JsonSerializer.Serialize(this);
+        }
+    }
+}