[feature]: Add response comparison/diff tool for API responses

Is there an existing issue for this?

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Summary

I would like to propose a new feature: the ability to compare two API responses directly within Hoppscotch. This tool would allow developers to visually compare responses from two different requests (e.g., from different environments or API versions) and see the differences side‑by‑side, with clear highlighting of added, removed, or changed fields in JSON responses.

Why should this be worked on?

When developing or debugging APIs, developers frequently need to compare responses from different environments (e.g., staging vs. production), different API versions, or before and after a backend change. Currently, this requires manual inspection or using external command‑line tools like jq and diff, which is time‑consuming, error‑prone, and disrupts the workflow.

Adding this feature to Hoppscotch would:

· Save developers significant time and reduce frustration. · Help catch breaking changes early in the development cycle. · Improve the overall developer experience by keeping everything within a single tool.

This feature is available in some competing tools (like Postman), and adding it would make Hoppscotch even more competitive and valuable for API development teams.