feat: The json module is now avaiable to stream maps

[grigi]

This allows using json.loads() and json.dumps() to convert fields between text and json representations.

Particularily useful moving data between MySQL and Postgres where MySQL stores json as text, and Postgres stores json as JSONB.

Usage in a stream_map:

        stream_maps:
          sample-reports:
            recipients_email_addresses: json.loads(recipients_email_addresses)

Closes #1502

---

📚 Documentation preview 📚: https://meltano-sdk--2531.org.readthedocs.build/en/2531/

[codspeed-hq]

CodSpeed Performance Report

Merging #2531 will not alter performance

_{Comparing grigi:main (e6b9041) with main (33b2d4e)}

Summary

✅ 6 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.23%. Comparing base (33b2d4e) to head (e6b9041).
Report is 146 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2531   +/-   ##
=======================================
  Coverage   89.23%   89.23%           
=======================================
  Files          54       54           
  Lines        4782     4782           
  Branches      935      935           
=======================================
  Hits         4267     4267           
  Misses        359      359           
  Partials      156      156           

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[grigi]

Ah, you want me to add docs to https://meltano-sdk--2531.org.readthedocs.build/en/2531/stream_maps.html#built-in-functions ?

[edgarrmondragon]

Ah, you want me to add docs to https://meltano-sdk--2531.org.readthedocs.build/en/2531/stream_maps.html#built-in-functions ?

yeah 🙏

[grigi]

Thanks for those documentation improvements @edgarrmondragon 🙏

[edgarrmondragon]

Thanks @grigi!