Decompile Title overlay (#20)

* Decompile Title overlay

* math structs as cpp when applicable

* fixes and improvements

* regressions fix 1

* regressions fix 2

include/Unknown/UnkStruct_02049be0.hpp

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "global.h"
+#include "types.h"
+
+class UnkStruct_02049be0 {
+public:
+    /* 00 */ unk32 mUnk_00;
+
+    UnkStruct_02049be0();
+    ~UnkStruct_02049be0();
+
+    char *func_02014ff4();
+};
+
+extern UnkStruct_02049be0 data_02049be0;