[cost] Move bound trace to a separate module
[cost] Move bound trace to a separate module

Reviewed By: ezgicicek

Differential Revision: D14247706

fbshipit-source-id: 42df75997

jvillard/infer,jvillard/infer,facebook/infer,jvillard/infer,facebook/infer,facebook/infer,facebook/infer,jvillard/infer,facebook/infer,jvillard/infer,jvillard/infer,jvillard/infer,facebook/infer,facebook/infer