Create alignment dictionary for procrustes algorithm

[sshivam95]

From the notebook here, we need an alignment_dictionary which corresponds to which entities are sameAs from Graph_A to Grapph_B.

To achieve that, we can make use of the entity_to_idx.p files from the training folders. In each file, the entities are given an index, we can just search through these files which entities are similar and then just create an alignment dictionary