Initializes all nodes in the first stage of the network
to have a distance of zero from the beginning, no
previous node, and for their last aircraft to have an
optimal spot release time equal to that of their spot
ready time.
Responsible for reading in the First Come First Serve (FCFS) aircraft sequence from
a file in a given supported format and generating an ArrayList of Aircraft from it
for the optimization to work on.
Input() -
Constructor for class edu.mit.ll.group43.surfaceoptimization.input.Input