Change the Intersection to a class, and stop using memory allocation for it (and pointer)

A bit more clean (on the code side)

source/include/intersect.h

@@ -15,14 +15,14 @@
 class Intersect
 {
 private:
-    Intersection **list;
+    Intersection *list;
     uint32_t num;
     uint32_t allocated;
 public:
     Intersect();
-    void add(Intersection *i);
+    void add(Intersection i);
     int count() { return this->num; };
-    Intersection *operator[](const int p) { return this->list[p]; }
+    Intersection operator[](const int p) { return this->list[p]; }
 };
 
 #endif //DORAYME_INTERSECT_H