LegoEntity parsing extra Action strings (#141)

* LegoEntity parse action string

* Reduced size assert for MxEntity

* remove override keyword for LegoEntity function

* Move global strings to new define.cpp file

LEGO1/legoutil.h

@@ -1,6 +1,8 @@
 #ifndef LEGOUTIL_H
 #define LEGOUTIL_H
 
+#include "extra.h"
+
 template <class T>
 inline T Abs(T p_t)
 {
@@ -19,6 +21,7 @@ inline T Max(T p_t1, T p_t2)
   return p_t1 > p_t2 ? p_t1 : p_t2;
 }
 
+ExtraActionType MatchActionString(const char *);
 void ConvertHSVToRGB(float r, float g, float b, float* out_r, float* out_g, float* out_b);
 
 #endif // LEGOUTIL_H