misc: Reformat Ryujinx.Audio with dotnet-format (#3485)

This is the first commit of a series of reformat around the codebase as
discussed internally some weeks ago.

This project being one that isn't touched that much, it shouldn't cause
conflict with any opened PRs.

Ryujinx.Audio/Backends/Common/HardwareDeviceSessionOutputBase.cs

@@ -76,4 +76,4 @@ namespace Ryujinx.Audio.Backends.Common
 
         public virtual void UnregisterBuffer(AudioBuffer buffer) { }
     }
-}
+}