Fixed issues with new module system

core/src/gui/menu.h

@@ -0,0 +1,23 @@
+#pragma once
+#include <string>
+#include <vector>
+#include <map>
+
+class Menu {
+public:
+    Menu();
+
+    struct MenuItem_t {
+        void (*drawHandler)(void* ctx);
+        void* ctx;
+    };
+
+    void registerEntry(std::string name, void (*drawHandler)(void* ctx), void* ctx = NULL);
+    void removeEntry(std::string name);
+    void draw();
+
+    std::vector<std::string> order;
+
+private:
+    std::map<std::string, MenuItem_t> items;
+};