fixing most whitespace issues, reordering namespaces and adding in headers (#5677)

src/modules/launcher/Wox.Plugin/AllowedLanguage.cs

@@ -1,4 +1,8 @@
-namespace Wox.Plugin
+// 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.Plugin
 {
     public static class AllowedLanguage
     {
@@ -18,4 +22,4 @@
                 || language.ToUpper() == Executable.ToUpper();
         }
     }
-}
+}