Implemented World::probe_lua_call and tested

luprex/cpp/core/streambuffer.hpp

@@ -243,6 +243,8 @@ public:
     virtual char const *what() const { return "Stream Corruption"; }
 };
 
+using SimpleDynamicValue = SimpleDynamic<eng::string>;
+
 class StreamBufferCore {
 protected:
     void *basebuffer_malloc(size_t size) { return eng::malloc(size); }