adding initial docs for structure as transform

[emjay07]

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Describe your changes

Adding docs for Structure as Transform

Issue ticket number and link

N/A

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📚 Documentation preview 📚: https://griptape--1172.org.readthedocs.build//1172/

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[collindutter]

Can we provide any sort of example of a payload here? Or link to a sample structure?

[emjay07]

I can move my Sample structure to the public repo and link that. When you say example Payload, do you mean to create a DC with a Transform?

[collindutter]

I just mean including some sort of snippet that explains what this:

Ensure the Structure you select to run as a Transform is configured to take in a ListArtifact as its first positional argument and returns either a TextArtifact or ListArtifact.

looks like in practice.

[emjay07]

Will do -- the Sample will cover that.