Matrix: added copyToRaw method to allow copying to a pointer

because most uORB messages still contain all components of a vector one by one after each other

matrix/Matrix.hpp

@@ -87,6 +87,11 @@ public:
         memcpy(dst, _data, sizeof(dst));
     }
 
+    void copyToRaw(Type *dst) const
+    {
+        memcpy(dst, _data, sizeof(_data));
+    }
+
     void copyToColumnMajor(Type (&dst)[M*N]) const
     {
         const Matrix<Type, M, N> &self = *this;