Code style - Use file scoped namespaces

Code style - Ran code cleanup

src/Artemis.UI/Screens/Settings/Tabs/AboutTabView.axaml.cs

@@ -1,18 +1,17 @@
 using Avalonia.Markup.Xaml;
 using Avalonia.ReactiveUI;
 
-namespace Artemis.UI.Screens.Settings
-{
-    public partial class AboutTabView : ReactiveUserControl<AboutTabViewModel>
-    {
-        public AboutTabView()
-        {
-            InitializeComponent();
-        }
+namespace Artemis.UI.Screens.Settings;
 
-        private void InitializeComponent()
-        {
-            AvaloniaXamlLoader.Load(this);
-        }
+public class AboutTabView : ReactiveUserControl<AboutTabViewModel>
+{
+    public AboutTabView()
+    {
+        InitializeComponent();
     }
-}
+
+    private void InitializeComponent()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+}