MatLab Function to load adjacency matrices

<div>A matlab function for loading specific adjacency matrices from the adjacency matrix files also uploaded here: <a href="https://doi.org/10.17028/rd.lboro.12346457.v1">https://doi.org/10.17028/rd.lboro.12346457.v1</a>.</div><div>nQubits corresponds to the number of nodes in the graph.</div><div>GraphNumber corresponds to the ordering given by the graphs when generated with Maple 2017.3's Nonisomorphic graph function.</div><div>The GraphNumber is indexed from 1.</div>