Revert "File scoped namespaces"

This reverts commit d31d8f574e.

Wino.Core.Domain/Interfaces/IBackgroundTaskService.cs

@@ -1,17 +1,18 @@
 using System.Threading.Tasks;
 
-namespace Wino.Core.Domain.Interfaces;
-
-public interface IBackgroundTaskService
+namespace Wino.Core.Domain.Interfaces
 {
-    /// <summary>
-    /// Unregisters all background tasks once.
-    /// This is used to clean up the background tasks when the app is updated.
-    /// </summary>
-    void UnregisterAllBackgroundTask();
+    public interface IBackgroundTaskService
+    {
+        /// <summary>
+        /// Unregisters all background tasks once.
+        /// This is used to clean up the background tasks when the app is updated.
+        /// </summary>
+        void UnregisterAllBackgroundTask();
 
-    /// <summary>
-    /// Registers required background tasks.
-    /// </summary>
-    Task RegisterBackgroundTasksAsync();
+        /// <summary>
+        /// Registers required background tasks.
+        /// </summary>
+        Task RegisterBackgroundTasksAsync();
+    }
 }