CmdPal: Use a factory for building the context menu VMs (#45572)

_targets #45566_

doesn't actually do anything, just moves around the instantiation of
command context item VMs.

This will let use add pin/unpin commands later

related to https://github.com/microsoft/PowerToys/issues/45191
related to https://github.com/microsoft/PowerToys/issues/45201

src/modules/cmdpal/Microsoft.CmdPal.UI/CommandPaletteContextMenuFactory.cs

@@ -0,0 +1,31 @@
+// 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 Microsoft.CmdPal.UI.ViewModels;
+using Microsoft.CommandPalette.Extensions;
+
+namespace Microsoft.CmdPal.UI;
+
+internal sealed partial class CommandPaletteContextMenuFactory : IContextMenuFactory
+{
+    private readonly SettingsModel _settingsModel;
+    private readonly TopLevelCommandManager _topLevelCommandManager;
+
+    public CommandPaletteContextMenuFactory(SettingsModel settingsModel, TopLevelCommandManager topLevelCommandManager)
+    {
+        _settingsModel = settingsModel;
+        _topLevelCommandManager = topLevelCommandManager;
+    }
+
+    public List<IContextItemViewModel> UnsafeBuildAndInitMoreCommands(
+        IContextItem[] items,
+        CommandItemViewModel commandItem)
+    {
+        var results = DefaultContextMenuFactory.Instance.UnsafeBuildAndInitMoreCommands(items, commandItem);
+
+        // TODO: #45201 Here, we'll want to add pin/unpin commands for pinning
+        // items to the top-level or to the dock.
+        return results;
+    }
+}