Adding install option to download older but compatible DepMap data

[abearab]

I uploaded an older DepMap data version into Harvard Dataverse – https://doi.org/10.7910/DVN/JIAT0H. This data has been compatible with current scripts in CanDI. I'll add some scripts to download data from this data source in addition to the current approach.

[abearab]

I can use something like dataverse_download function from gears/utils.py or TDC/load.py.