Integrate SWE-Bench Verified

[cwing-nvidia]

Background

SWE-Bench Verified is a popular benchmark for evaluating agents on real-world software engineering tasks.

What is SWE-Bench Verified

SWE-Bench Verified contains GitHub issues from open-source projects where agents must understand the codebase, write fixes, and pass test suites. The "Verified" subset has high-quality, human-validated examples. https://www.swebench.com/

Acceptance Criteria

• [ ] Implement SWE-Bench Verified in NeMo Gym