Reorganized UnityEngine namespace

Reorganized UnityEngine namespace by splitting headers into individual classes

lib/private/UnityEngine/Math.cpp

@@ -0,0 +1,16 @@
+#include "pch-il2cpp.h"
+
+#include "UnityEngine/Math.h"
+#include <helpers.h>
+
+const char* Math::Vector3::ToString(app::Vector3* v)
+{
+	app::String* str = app::Vector3_ToString(v, nullptr);
+
+	return str ? il2cppi_to_string(str).c_str() : "Vector::ToString returned nullptr!\n";
+}
+
+const char* Math::Vector3::ToString(app::Vector3 v)
+{
+	return ("x: " + std::to_string(v.x) + " y: " + std::to_string(v.y) + " z: " + std::to_string(v.z)).c_str();
+}