更新客户端渲染，更新了壳

参考/wpfui-main/docs/documentation/symbolicon.md

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+# SymbolIcon
+
+`SymbolIcon` is a control responsible for rendering icons.
+
+### Implementation
+
+```csharp
+class Wpf.Ui.Controls.SymbolIcon
+```
+
+## Exposes
+
+```csharp
+// Gets or sets displayed symbol
+SymbolIcon.Symbol = SymbolRegular.Empty;
+```
+
+```csharp
+// Defines whether or not we should use the SymbolFilled
+SymbolIcon.Filled = false;
+```
+
+```csharp
+// Icon foreground
+SymbolIcon.Foreground = Brushes.White;
+```
+
+```csharp
+// Icon size
+SymbolIcon.FontSize = 16;
+```
+
+### How to use
+
+```xml
+<ui:SymbolIcon
+  Symbol="Fluent24"
+  Filled="False"
+  FontSize="16"
+  Foreground="White"/>
+```