Add LogoUrl to Brand component.

Resolve #6704

framework/src/Volo.Abp.AspNetCore.Components.WebAssembly.BasicTheme/Themes/Basic/Branding.razor

@@ -1,3 +1,9 @@
-@using Volo.Abp.Ui.Branding
+@using Volo.Abp.Ui.Branding
 @inject IBrandingProvider BrandingProvider
-<a class="navbar-brand" href="">@BrandingProvider.AppName</a>
+<a class="navbar-brand" href="">
+    @if (!BrandingProvider.LogoUrl.IsNullOrWhiteSpace())
+    {
+        <img src="@BrandingProvider.LogoUrl" alt="@BrandingProvider.AppName" >
+    }
+    @BrandingProvider.AppName
+</a>

framework/src/Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic/Themes/Basic/Components/Brand/Default.cshtml

@@ -1,3 +1,9 @@
 @using Volo.Abp.Ui.Branding
 @inject IBrandingProvider BrandingProvider
-<a class="navbar-brand" href="~/">@BrandingProvider.AppName</a>
+<a class="navbar-brand" href="~/">
+    @if (!BrandingProvider.LogoUrl.IsNullOrWhiteSpace())
+    {
+        <img src="@BrandingProvider.LogoUrl" alt="@BrandingProvider.AppName" >
+    }
+    @BrandingProvider.AppName
+</a>