更新客户端渲染，更新了壳

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

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+# FontIcon
+
+`FontIcon` is a control responsible for rendering icons based on the provided font.
+
+### Implementation
+
+```csharp
+class Wpf.Ui.Controls.FontIcon
+```
+
+## Exposes
+
+```csharp
+// Gets or sets displayed glyph
+FontIcon.Glyph = '\uE00B';
+```
+
+```csharp
+// Gets or sets used font family
+FontIcon.FontFamily = "Segoe Fluent Icons";
+```
+
+```csharp
+// Icon foreground
+FontIcon.Foreground = Brushes.White;
+```
+
+```csharp
+// Icon size
+FontIcon.FontSize = 16;
+```
+
+### How to use
+
+```xml
+<ui:FontIcon
+  Glyph="&#xe00b;"
+  FontFamily="{DynamicResource SegoeFluentIcons}"
+  FontSize="16"
+  Foreground="White"/>
+```