amadeus: Add missing compressor effect from REV11 (#4010)

* amadeus: Add missing compressor effect from REV11

This was in my reversing notes but seems I completely forgot to
implement it

Also took the opportunity to simplify the Limiter effect a bit.

* Remove some outdated comment

* Address gdkchan's comments

Ryujinx.Audio/Renderer/Server/ICommandProcessingTimeEstimator.cs

@@ -35,5 +35,6 @@ namespace Ryujinx.Audio.Renderer.Server
         uint Estimate(LimiterCommandVersion2 command);
         uint Estimate(GroupedBiquadFilterCommand command);
         uint Estimate(CaptureBufferCommand command);
+        uint Estimate(CompressorCommand command);
     }
 }