feat: Explore with Reader TryInto Value and JSON formatting

[gpeacock]

This adds a TryInto serde_json::Value method for Reader.

It also has a demo unit test that reformats the JSON output assertions. I'm not sure if that function belongs in the Reader or not.

This is not ready to merge, but I'm doing a PR for easy comparision.

[codecov]

Codecov Report

Attention: Patch coverage is 90.69767% with 8 lines in your changes missing coverage. Please review.

Project coverage is 78.83%. Comparing base (4cb20e3) to head (5d7f8b8).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
sdk/src/reader.rs	90.69%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #911      +/-   ##
==========================================
- Coverage   78.97%   78.83%   -0.15%     
==========================================
  Files         146      146              
  Lines       34555    34732     +177     
==========================================
+ Hits        27291    27381      +90     
- Misses       7264     7351      +87     

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