feat: Add cauchy Instance Methods to PyTorch Frontend

[Pandey-utkarsh]

PR Description

#26790

Related Issue

Close #26790

Checklist

• [x] Did you add a function?
• [x] Did you add the tests?
• [ ] Did you run your tests and are your tests passing?
• [x] Did pre-commit not fail on any check?
• [x] Did you follow the steps we provided?

Socials

[github-actions[bot]]

Thank you for this PR, here is the CI results:

---

This pull request does not result in any additional test failures. Congratulations!

[ivy-seed]

This PR has been labelled as stale because it has been inactive for more than 7 days. If you would like to continue working on this PR, then please add another comment or this PR will be closed in 7 days.