优化更新代码，添加界面功能并整合

WPFluent/Controls/NavigationView/NavigationCacheMode.cs

@@ -0,0 +1,29 @@
+
+
+
+// Based on Windows UI Library
+// Copyright(c) Microsoft Corporation.All rights reserved.
+
+// ReSharper disable once CheckNamespace
+namespace WPFluent.Controls;
+
+/// <summary>
+/// Specifies caching characteristics for a page involved in a navigation.
+/// </summary>
+public enum NavigationCacheMode
+{
+    /// <summary>
+    /// The page is never cached and a new instance of the page is created on each visit.
+    /// </summary>
+    Disabled,
+
+    /// <summary>
+    /// The page is cached, but the cached instance is discarded when the size of the cache for the frame is exceeded.
+    /// </summary>
+    Enabled,
+
+    /// <summary>
+    /// The page is cached and the cached instance is reused for every visit regardless of the cache size for the frame.
+    /// </summary>
+    Required,
+}