feat: openapi response schema

[VishnuSanal]

Description

This PR fixes #930

Summary

This PR does add the openapi response schema

PR Checklist

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• The PR contains a descriptive title
• The PR contains a descriptive summary of the changes
• You build and test your changes before submitting a PR.
• You have added relevant documentation
• You have added relevant tests. We prefer integration tests wherever possible

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[codspeed-hq]

CodSpeed Performance Report

Merging #960 will not alter performance

_{Comparing VishnuSanal:openapi-response-schema (38b6d26) with main (e6872af)}

Summary

✅ 115 untouched benchmarks

🆕 1 new benchmarks

Benchmarks breakdown

	Benchmark	main	VishnuSanal:openapi-response-schema	Change
🆕	test_openapi_response_body	N/A	6 ms	N/A