add images from https://github.com/WilhelmusLab/IceFloeTracker.jl/compare/main...update_preprocess_tiling_notebook to testing

[hollandjg]

Add a function to download data as needed from main...update_preprocess_tiling_notebook or https://github.com/danielmwatkins/ice_floe_validation_dataset/blob/main/data/validation_dataset/binary_landfast/017-baffin_bay-20080816-aqua-binary_landfast.png

Pull in data from https://github.com/danielmwatkins/ice_floe_validation_dataset/blob/main/data/validation_dataset/validation_dataset.csv to pick out the right floes and run tests