Revert "File scoped namespaces"

This reverts commit d31d8f574e.

Wino.Mail/Views/ImapSetup/PreparingImapFoldersPage.xaml.cs

@@ -15,15 +15,16 @@ using Windows.UI.Xaml.Navigation;
 
 // The Blank Page item template is documented at https://go.microsoft.com/fwlink/?LinkId=234238
 
-namespace Wino.Views.ImapSetup;
-
-/// <summary>
-/// An empty page that can be used on its own or navigated to within a Frame.
-/// </summary>
-public sealed partial class PreparingImapFoldersPage : Page
+namespace Wino.Views.ImapSetup
 {
-    public PreparingImapFoldersPage()
+    /// <summary>
+    /// An empty page that can be used on its own or navigated to within a Frame.
+    /// </summary>
+    public sealed partial class PreparingImapFoldersPage : Page
     {
-        this.InitializeComponent();
+        public PreparingImapFoldersPage()
+        {
+            this.InitializeComponent();
+        }
     }
 }