优化更新代码，添加界面功能并整合

WPFluent/Controls/ThumbRate/ThumbRateState.cs

@@ -0,0 +1,26 @@
+
+
+
+// ReSharper disable once CheckNamespace
+namespace WPFluent.Controls;
+
+/// <summary>
+/// States of the <see cref="ThumbRate"/> control.
+/// </summary>
+public enum ThumbRateState
+{
+    /// <summary>
+    /// No thumb has been clicked.
+    /// </summary>
+    None,
+
+    /// <summary>
+    /// The thumb up has been clicked.
+    /// </summary>
+    Liked,
+
+    /// <summary>
+    /// The thumb down has been clicked.
+    /// </summary>
+    Disliked,
+}