pytorch

eefbff77 - ns for fx: add utils for l2 error and cosine similarity (#61380)

ns for fx: add utils for l2 error and cosine similarity (#61380) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/61380 Adds convenience wrappers for l2 error and cosine similarity to NS utils. Test Plan: ``` python test/test_quantization.py TestFXNumericSuiteCoreAPIs.test_extend_logger_results_with_comparison ``` Imported from OSS Reviewed By: hx89 Differential Revision: D29600354 fbshipit-source-id: 670c44a44df7f345884cacf26ed3c885edbe9977