[AdvancedPaste] Custom Actions (#34395)

* [AdvancedPaste] Custom Actions

* Renamed pipe name to make spellcheck happy

* Improved settings page for Custom Actions

* UI improvements, disabled standard paste actions when no clipboard text, update clipboard text and gpo state every second

* Bug fixes, single query/prompt box, Ctrl+num shortcuts for custom actions, error box

* Spellcheck issue

* Bug fixes and used Advanced Paste Window as wait indicator for keyboard shortcuts

* Improvements to PromptBox, incluing show error message as tooltip

* Refactoring

* Fixed issue where ESC sometimes didn't close paste window

* Update src/settings-ui/Settings.UI/Strings/en-us/Resources.resw

Co-authored-by: Stefan Markovic <57057282+stefansjfw@users.noreply.github.com>

---------

Co-authored-by: Stefan Markovic <57057282+stefansjfw@users.noreply.github.com>

src/settings-ui/Settings.UI.Library/AdvancedPasteCustomActions.cs

@@ -0,0 +1,26 @@
+// 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.Collections.ObjectModel;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Microsoft.PowerToys.Settings.UI.Library;
+
+public sealed class AdvancedPasteCustomActions
+{
+    private static readonly JsonSerializerOptions _serializerOptions = new()
+    {
+        WriteIndented = true,
+    };
+
+    [JsonPropertyName("value")]
+    public ObservableCollection<AdvancedPasteCustomAction> Value { get; set; } = [];
+
+    public AdvancedPasteCustomActions()
+    {
+    }
+
+    public string ToJsonString() => JsonSerializer.Serialize(this, _serializerOptions);
+}