[Documentation]: Add Missing PyNWB Tutorials

[lawrence-mbf]

What would you like changed or added to the documentation and why?

• [x] hdmf_common.Container
• [x] hdmf_common.EnumData
• [x] core.ScratchData
• [x] core.IndexSeries
• [x] core.OnePhotonSeries
• [x] core.FilteredEphys

Do you have any interest in helping write or edit the documentation?

Yes.

Code of Conduct

• [X] I agree to follow this project's Code of Conduct
• [X] Have you ensured this change was not already requested?

[lawrence-mbf]

Container not deemed necessary since MatNWB cannot create extensions on its own and all File validation relies on subtypes.