Add section for test results

[KrishnaIyer]

Summary

Add section for test results. Refs: https://discuss.thethingsindustries.com/t/product-team-session-in-palma-20-mar-2024/1069

Changes

• Add a sub-section for test results.

Testing

NA

Regressions

NA

Notes for Reviewers

NA

Checklist

• Scope: The referenced issue is addressed, there are no unrelated changes.
• Compatibility: The changes are backwards compatible with existing API, storage, configuration and CLI, according to the compatibility commitments in README.md for the chosen target branch.
• Documentation: Relevant documentation is added or updated.
• Testing: The steps/process to test this feature are clearly explained including testing for regressions.
• Infrastructure: If infrastructural changes (e.g., new RPC, configuration) are needed, a separate issue is created in the infrastructural repositories.
• Changelog: Significant features, behavior changes, deprecations and fixes are added to CHANGELOG.md.
• Commits: Commit messages follow guidelines in CONTRIBUTING.md, there are no fixup commits left.