smaller stylecop fixes in Wox.Core and Wox.Infra (#5671)

* Headers
unneeded usings
files need blank line at bottom
Fixed double returns
Returns after braces

* commenting out stylecop

src/modules/launcher/Wox.Infrastructure/UserSettings/HttpProxy.cs

@@ -1,4 +1,8 @@
-namespace Wox.Infrastructure.UserSettings
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace Wox.Infrastructure.UserSettings
 {
     public class HttpProxy
     {
@@ -8,4 +12,4 @@
         public string UserName { get; set; }
         public string Password { get; set; }
     }
-}
+}