Make Every Class Internal

Util/Audio/AudioSyncCalculator.cs

@@ -2,7 +2,7 @@ using System;
 
 namespace ADOFAIRenderer.Util.Audio
 {
-    public class AudioSyncCalculator
+    internal class AudioSyncCalculator
     {
         private readonly long _sampleRate;
         private readonly (long Numerator, long Denominator) _fpsRational;