Creates a stack structure. A stack is a LIFO (last in, first out) vector (array) of items. It has O(1) insertion and O(1) removal. Stacks have two operations: Push (adding an item) and Pop (removes items in reverse-push order). The contents of the stack are uniform; i.e. storing a string and then retrieving it as an integer is NOT the same as StringToInt()! The "blocksize" determines how many cells each slot has; it cannot be changed after creation.
native ArrayStack CreateStack(int blocksize = 1)