[Settings] New Settings controls, XAML formatting and cleanup (#21317)

* Awake

* Always On Top

* ColorPicker

* FancyZones

* FancyZones

* Hosts file editor

* ImageResizer

* Update ImageResizerPage.xaml

* KBM

* General

* Update MeasureToolPage.xaml

* Mouse utils

* PowerAccent

* Run

* PowerOCR

* File preview

* PowerRename

* Shortcut Guide

* VCM

* XAML styler

* Update ShellPage.xaml

* XAML formatting and cleanup

* Moving converters

* Update App.xaml

* XAML formatting

* XAML formatting

* Fixes

* XAML formatting

* Image resizer updates

* Color picker page and margin tweaks

* Update PowerLauncherPage.xaml

* Tweaks based on Jay's feedback

* Resolve conflicts

* Add labs source to unit tests

* Fix feedback

* Fix KBM bug

* Infobar fix

* Fixes

* Resolve conflicts

* Add converter

src/settings-ui/Settings.UI/Converters/VisibleIfNotEmptyConverter.cs

@@ -0,0 +1,24 @@
+// 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.Collections;
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Data;
+
+namespace Microsoft.PowerToys.Settings.UI.Converters
+{
+    public class VisibleIfNotEmptyConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, string language)
+        {
+            return value == null || (value as IList).Count == 0 ? Visibility.Collapsed : Visibility.Visible;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, string language)
+        {
+            return null;
+        }
+    }
+}