enable child component of cookie consent control.

Oqtane.Client/Themes/Controls/Theme/CookieConsent.razor

@@ -8,12 +8,22 @@
 {
     <form method="post" @formname="CookieConsentForm" @onsubmit="async () => await AcceptPolicy()" data-enhance>
         <input type="hidden" name="@Constants.RequestVerificationToken" value="@SiteState.AntiForgeryToken" />
-        @((MarkupString)Convert.ToString(Localizer["ConsentBody"]))
+        @if (ChildContent != null)
+        {
+            @ChildContent
+        }
+        else
+        {
+            @((MarkupString)Convert.ToString(Localizer["ConsentBody"]))
+        }
     </form>
 }
 @code {
     private bool showBanner;
 
+    [Parameter]
+    public RenderFragment ChildContent { get; set; } = null;
+
     protected override async Task OnInitializedAsync()
     {
         showBanner = !(await CookieConsentService.CanTrackAsync());