Fixed Remove and Delete

check that Delete actually deletes the node and not just the node
pointer
List class

translated everything from main into the list class
Finalized copy constructor. Added Append function

fixed copy constructor.
removed getter and setter (bad idea).
included an append function which creates nodes at the end of the list.
Add : Assignment operator

included assignment operator
Working : Ith node

tested Ithnode function and works perfectly
Add : Iterator