add swift-json-schema in tooling data

[heysujal]

What kind of change does this PR introduce?

Added swift-json-schema to the tooling page.

Issue Number:

• Closes Add swift-json-schema #1150

Screenshot

Summary
Added an entry for swift-json-schema in data/tooling-data.yaml

Does this PR introduce a breaking change?
No

[github-actions]

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Name	Status	Preview	Last Commit
website	✅ Ready (View Log)	Visit Preview	e7b3443

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (475eb59) to head (e7b3443).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1222   +/-   ##
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  Coverage   100.00%   100.00%           
=========================================
  Files           10        10           
  Lines          373       373           
  Branches        94        94           
=========================================
  Hits           373       373           

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[DhairyaMajmudar]

Thank for the PR, LGTM 👍🏻