Integrate keyboard manager with settings v2[Part-2] (#2107)

* Added CustomAction Data Models

* Updated data model

* Updated Button command trigger for keyboard manager

* Integerated custom actions in Keyboard manager module backend

* Allow Runner to launch windows on foreground

* Refactor and moved the execution logic to background thread

* Removed non-required unlock calls

* Fixed typo

* Resolve PR comments

src/core/Microsoft.PowerToys.Settings.UI.Lib/CustomAction/CustomActionDataModel.cs

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+// 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.Serialization;
+
+namespace Microsoft.PowerToys.Settings.UI.Lib.CustomAction
+{
+    public class CustomActionDataModel
+    {
+        [JsonPropertyName("action_name")]
+        public string Name { get; set; }
+
+        [JsonPropertyName("value")]
+        public string Value { get; set; }
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.Lib/CustomAction/CustomNamePolicy.cs

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+// 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;
+using System.Text.Json;
+
+namespace Microsoft.PowerToys.Settings.UI.Lib.CustomAction
+{
+    public class CustomNamePolicy : JsonNamingPolicy
+    {
+        private Func<string, string> convertDelegate;
+
+        public CustomNamePolicy(Func<string, string> convertDelegate)
+        {
+            this.convertDelegate = convertDelegate;
+        }
+
+        public override string ConvertName(string name)
+        {
+            return convertDelegate(name);
+        }
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.Lib/CustomAction/ModuleCustomAction.cs

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+// 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 Microsoft.PowerToys.Settings.UI.Lib.CustomAction
+{
+    public class ModuleCustomAction
+    {
+        public CustomActionDataModel ModuleAction { get; set; }
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.Lib/CustomAction/SendCustomAction.cs

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+// 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.CustomAction
+{
+    public class SendCustomAction
+    {
+        private readonly string moduleName;
+
+        public SendCustomAction(string moduleName)
+        {
+            this.moduleName = moduleName;
+        }
+
+        [JsonPropertyName("action")]
+        public ModuleCustomAction Action { get; set; }
+
+        public string ToJsonString()
+        {
+            var jsonSerializerOptions = new JsonSerializerOptions
+            {
+                PropertyNamingPolicy = new CustomNamePolicy((propertyName) =>
+                {
+                    return propertyName.Equals("ModuleAction") ? moduleName : propertyName;
+                }),
+            };
+
+            return JsonSerializer.Serialize(this, jsonSerializerOptions);
+        }
+    }
+}

src/core/Microsoft.PowerToys.Settings.UI.Lib/Utilities/Helper.cs

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+// 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.Diagnostics;
+using System.Runtime.InteropServices;
+using Microsoft.PowerToys.Settings.UI.Lib.CustomAction;
+
+namespace Microsoft.PowerToys.Settings.UI.Lib.Utilities
+{
+    public class Helper
+    {
+        public static bool AllowRunnerToForeground()
+        {
+            var result = false;
+            var processes = Process.GetProcessesByName("PowerToys");
+            if (processes.Length > 0)
+            {
+                var pid = processes[0].Id;
+                result = AllowSetForegroundWindow(pid);
+            }
+
+            return result;
+        }
+
+        public static string GetSerializedCustomAction(string moduleName, string actionName, string actionValue)
+        {
+            var customAction = new CustomActionDataModel
+            {
+                Name = actionName,
+                Value = actionValue,
+            };
+
+            var moduleCustomAction = new ModuleCustomAction
+            {
+                ModuleAction = customAction,
+            };
+
+            var sendCustomAction = new SendCustomAction(moduleName);
+            sendCustomAction.Action = moduleCustomAction;
+            return sendCustomAction.ToJsonString();
+        }
+
+        [DllImport("user32.dll")]
+        private static extern bool AllowSetForegroundWindow(int dwProcessId);
+    }
+}