forward_list

This is just a simple realisation of the forward_list from STL. Many methods from original STL container absent here, but it is still quite interesting to read to understand how this container works :)
I update it and try to do it better :)

Requirements:

C++14 and x86/x64

Functionality:

1. MyList() - default constructor
2. ~MyList() - destructor
3. array like operator T& operator [](const int index) - returns the element via index
4. GetSize() - return the size of the lis
5. pop_front() - erases the first element
6. pop_back() - erases the last element
7. clear() - erases all elements
8. push_front(T data) - puts the element data in the beginning of the list
9. push_back(T data) - puts the element data in the end of the list
10. insert(T data, const int index) puts the element data in the position before index