Overhaul existing and add new audio CD protections (#131)

* Overhaul existing and add new audio CD protections

Overhaul many audio CD protections, on top of adding a few more. Unfortunately, disable key2Audio detection as well, as the existing checks were simply detecting OpenMG components and not key2Audio itself.

* Fix issues from PR review

BurnOutSharp/ProtectionType/Key2Audio.cs

@@ -0,0 +1,16 @@
+namespace BurnOutSharp.ProtectionType
+{
+    /// <summary>
+    /// Key2Audio is an audio CD copy protection created by Sony. The initial version, simply called key2audio, appears to simply attempt to make the disc unplayable on a computer. 
+    /// Further investigation is needed to determine if this first version is able to be detected, or if there's no identifying data present on these.
+    /// The other major version, key2AudioXS, appears to be a standard audio CD protection that uses, at the very least, WMDS DRM, and quite possibly OpenMG as well.
+    /// Key2AudioXS appears to have three sessions total, and some reports online indicate it may have a partially invalid TOC.
+    /// References:
+    /// https://web.archive.org/web/20070507073131/http://www.cdfreaks.com/reviews/Key2Audio-explained-and-should-we-fear-it-
+    /// https://www.cdmediaworld.com/hardware/cdrom/cd_protections_key2audio.shtml
+    /// </summary>
+    public class Key2Audio
+    {
+        // TODO: Implement
+    }
+}