[chore] Re-record JSON responses for docs

[nwithan8]

• Most JSON responses have not changed outside of timestamps.
• Some have extra data entries (previously one or two records, now three or four).
• Some deprecated functionality (carbon offset, batch create+buy) have been removed.
• Added Python tool used to generate these response snippets + improved documentation and Makefile steps

[Justintime50]

I'd like these regenerated using the correct user ID for the responses please, could be some weird artifacts mixed in if not (see internal diff for more details on that)

[nwithan8]

I'd like these regenerated using the correct user ID for the responses please, could be some weird artifacts mixed in if not (see internal diff for more details on that)

I have addressed your feedback and re-recorded all the cassettes with the proper API keys, did result in a lot less diffs.

I've also added the Python tool we use to generate these snippets into the tools directory and improved its documentation so it will be easier next time around to carry out this process.

Addressed