feat: 增加 ChildContent 模板

Author: ArgoZhang

src/BootstrapBlazor/Components/Input/BootstrapInputGroupLabel.razor

@@ -4,10 +4,26 @@
 @if (IsInputGroupLabel)
 {
     <div @attributes="@AdditionalAttributes" class="@ClassString" style="@StyleString" required="@Required">
-        <span>@DisplayText</span>
+        @if (ChildContent != null)
+        {
+            @ChildContent
+        }
+        else
+        {
+            <span>@DisplayText</span>
+        }
     </div>
 }
 else
 {
-    <label @attributes="@AdditionalAttributes" class="@ClassString" style="@StyleString" required="@Required">@DisplayText</label>
+    <label @attributes="@AdditionalAttributes" class="@ClassString" style="@StyleString" required="@Required">
+        @if (ChildContent != null)
+        {
+            @ChildContent
+        }
+        else
+        {
+            @DisplayText
+        }
+    </label>
 }

src/BootstrapBlazor/Components/Input/BootstrapInputGroupLabel.razor.cs

@@ -41,6 +41,12 @@ public partial class BootstrapInputGroupLabel
     [Parameter]
     public bool ShowRequiredMark { get; set; }
 
+    /// <summary>
+    /// Gets or sets the child content. Default is null.
+    /// </summary>
+    [Parameter]
+    public RenderFragment? ChildContent { get; set; }
+
     private string? Required => ShowRequiredMark ? "true" : null;
 
     private bool IsInputGroupLabel => InputGroup != null;