Revert "File scoped namespaces"

This reverts commit d31d8f574e.

Wino.Core.Domain/Interfaces/IInitializeAsync.cs

@@ -1,11 +1,12 @@
 using System.Threading.Tasks;
 
-namespace Wino.Core.Domain.Interfaces;
-
-/// <summary>
-/// An interface that all startup services must implement.
-/// </summary>
-public interface IInitializeAsync
+namespace Wino.Core.Domain.Interfaces
 {
-    Task InitializeAsync();
+    /// <summary>
+    /// An interface that all startup services must implement.
+    /// </summary>
+    public interface IInitializeAsync
+    {
+        Task InitializeAsync();
+    }
 }