Add MxList, MxPresenterList, add to MxMediaManager (#122)

* Add MxList, MxPresenterList, add to MxMediaManager

* Match ~MxList<T>

LEGO1/mxpresenterlist.h

@@ -0,0 +1,27 @@
+#ifndef MXPRESENTERLIST_H
+#define MXPRESENTERLIST_H
+
+#include "mxlist.h"
+
+class MxPresenter;
+
+// Unclear what the purpose of this class is
+// VTABLE 0x100d62f0
+// SIZE 0x18
+class MxPresenterListParent : public MxList<MxPresenter>
+{
+public:
+  MxPresenterListParent() {
+    m_customDestructor = Destroy;
+  }
+};
+
+// VTABLE 0x100d6308
+// SIZE 0x18
+class MxPresenterList : public MxPresenterListParent
+{
+public:
+  virtual MxS8 Compare(MxPresenter *, MxPresenter *); // +0x14
+};
+
+#endif // MXPRESENTERLIST_H