Added PDBCreator package

Each Amino acid will extend amino acid will will contain the relative
coords for all shared atoms. Amino acid uses Amino and acid group to
create it self. Each amino acid will have to be it's own object which
extends amino acid. In each object, will we have to give the relative
coordinates for each amino acids R group. The R group of an amino acid
is the section of an amino acid which is different for every type