Update list of public dataset resources

[msschwartz21]

Ideas

• Janelia organelle FIB-SEM dataset, github.com/janelia-cosem, Heinrich et al. 2021 Nature
• Data set for Cell states beyond transcriptomics: integrating structural organization and gene expression in hiPSC-derived cardiomyocytes (Allen Institute)
• Multiple datasets available through Quilt from the Allen Institute for Cell Science - https://open.quiltdata.com/b/allencell/packages/?filter=aics%2F
• jump cell painting pilot dataset
• OpenCell dataset from CZI Biohub