[fxcop] Settings UI library (part 4) - project/namespace renames (#7403)

* Rename Interface to Interfaces in namespaces

* Rename Lib to Library in namespaces

* Rename project and directory and enable fxcop

* Add CA2213 suppression

* Minor fixes

src/core/Microsoft.PowerToys.Settings.UI.Library/SndModuleSettings`1.cs

@@ -0,0 +1,30 @@
+// 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.Library
+{
+    // Represents a powertoys module settings setnt to the runner.
+    public class SndModuleSettings<T>
+    {
+        [JsonPropertyName("powertoys")]
+        public T PowertoysSetting { get; set; }
+
+        public SndModuleSettings()
+        {
+        }
+
+        public SndModuleSettings(T settings)
+        {
+            PowertoysSetting = settings;
+        }
+
+        public string ToJsonString()
+        {
+            return JsonSerializer.Serialize(this);
+        }
+    }
+}