Improve network vis

[jthorton]

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In various examples in OpenFE documentation, the function "plot_atommapping_network" in utils.atommapping_network_plotting clips the image. I wonder if we can have the source code updated, e.g. with the following script:

    fig = plot_atommapping_network(ligand_network)
    axes = fig.axes
    for ax in axes:
        ax.set_frame_on(False) # remove the black frame
        for t in ax.texts:
            t.set_clip_on(False) # do not clip the label in the network plot

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[atravitz]

resolved by #1822