Inventory of publicly available GalSim datasets

[EiffL]

I just created a zenodo community intended to gather in one place the different datasets available to use with GalSim. I uploaded the COSMOS 25.2 and 23.5 samples but I think other people have made other samples. We should upload them on zenodo as well.

Here are the ones I've heard about:

• COSMOS HSC sample from Mandelbaum et al. 2018 (I can take care of this one)
• The CANDELS data that @sowmyakth is using for color gradients (I think)

Are there other ones ?

[rmjarvis]

Closing this as an issue in GalSim. Of course, people should continue to add relevant data sets to Tim's zenodo page as appropriate.