[WIP] Update metadata

[shntnu]

Address this

The data conveniently includes some annotations, such as mechanisms of action for the drug screens, yet it is not clear what sources were used and what can be expected in each file, neither from the paper nor from the repository.

as well as documenting all the other metadata

See https://github.com/broadinstitute/2018_04_20_Rosetta/issues/20 for other details

[shntnu]

https://docs.google.com/spreadsheets/d/1EpqBLJqio8ptGlZe9Ywq1OUJahKSpYNb6S4lJ9yFc0o/edit#gid=1093566550

[shntnu]

Moved to

• https://github.com/broadinstitute/2018_04_20_Rosetta/pull/23
• https://github.com/carpenterlab/2021_Haghighi_submitted/commit/0f3787d5af76d7eb72e7f03e32d28ed3dd43e07b