Code cleanup; Reader classes renamed to Decoders, Writers to Encoders, every Decoder must have a corresponding Settings class now just like Encoders. UserDefinedEncoders renamed to CommandLineEncoders, etc.

CUETools.Codecs.lame_enc/LAMEEncoderVBRProcessingQuality.cs

@@ -0,0 +1,8 @@
+namespace CUETools.Codecs.LAME
+{
+    public enum LAMEEncoderVBRProcessingQuality : uint
+    {
+        Best = 0,
+        Normal = 5,
+    }
+}