Document the folder structure

[shntnu]

Document the folder structure using these issues/notes as a starting point

• https://github.com/cytomining/profiling-handbook/issues/54
• https://github.com/jump-cellpainting/aws/issues/53#issue-946391501
• https://github.com/jump-cellpainting/aws#steps-for-uploading-data-to-s3cellpainting-gallery
• https://github.com/jump-cellpainting/aws/blob/main/DATA_UPLOAD.md

[ErinWeisbart]

Does #2 close this issue?

[shntnu]

Does #2 close this issue?

Yes 🎉