Audio Renderer improvements (#210)

* Partial voice implementation on audio renderer

* Implemented audren resampler (based on original impl)

* Fix BiquadFilter struct

* Pause audio playback on last stream buffer

* Split audren/audout files into separate folders, some minor cleanup

* Use AudioRendererParameter on GetWorkBufferSize aswell

* Bump audren version to REV4, name a few things, increase sample buffer size

* Remove useless new lines

Ryujinx.HLE/OsHle/Utilities/StructWriter.cs

@@ -0,0 +1,25 @@
+using ChocolArm64.Memory;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.HLE.OsHle.Utilities
+{
+    class StructWriter
+    {
+        private AMemory Memory;
+
+        public long Position { get; private set; }
+
+        public StructWriter(AMemory Memory, long Position)
+        {
+            this.Memory   = Memory;
+            this.Position = Position;
+        }
+
+        public void Write<T>(T Value) where T : struct
+        {
+            AMemoryHelper.Write(Memory, Position, Value);
+
+            Position += Marshal.SizeOf<T>();
+        }
+    }
+}