Initial work for AbstractUI options

OwlCore.Wpf/Converters/Bools/Visible/CollectionNotAnyToVisibilityConverter.cs

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+using System;
+using System.Collections;
+using System.Diagnostics.Contracts;
+using System.Globalization;
+using System.Runtime.CompilerServices;
+using System.Windows;
+using System.Windows.Data;
+
+namespace OwlCore.Wpf.Converters.Bools.Visible
+{
+    /// <summary>
+    /// A converter that converts a given <see cref="ICollection"/> to an <see cref="Visibility"/> based on the presence of any items in the <see cref="ICollection"/>.
+    /// </summary>
+    public sealed class CollectionNotAnyToVisibilityConverter : IValueConverter
+    {
+        /// <summary>
+        /// Converts an <see cref="ICollection"/> an <see cref="Visibility"/> based on the presence of any items in the <see cref="ICollection"/>.
+        /// </summary>
+        /// <param name="value">The <see cref="ICollection"/>.</param>
+        /// <returns>A <see cref="Visibility"/>.</returns>
+        [Pure]
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Visibility Convert(ICollection value) => BoolToVisibilityConverter.Convert(CollectionNotAnyToBoolConverter.Convert(value));
+
+        /// <inheritdoc/>
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is ICollection collection)
+            {
+                return Convert(collection);
+            }
+
+            return Visibility.Collapsed;
+        }
+
+        /// <inheritdoc/>
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}