Language: C++ Implement a generic list using templates using a doubly linked list instead of an array. Provide constructors, destructor and methods for returning (with and without remove) the first and last element as well as adding a new element at the front and at the end of the list. Also implement a method which returns the amount of elements in the list. Name the files LinkedList.h and testLinkedList.cpp. You can assume that the input will be valid.