Separate protections into their own classes

BurnOutSharp/ProtectionType/KeyLock.cs

@@ -0,0 +1,13 @@
+namespace BurnOutSharp.ProtectionType
+{
+    public class KeyLock
+    {
+        public static string CheckContents(string fileContent)
+        {
+            if (fileContent.Contains("KEY-LOCK COMMAND"))
+                return "Key-Lock (Dongle)";
+
+            return null;
+        }
+    }
+}