Create a floss_testing_nsm tool Create a tool to calculate Floss Testing NSM values. Currently, the command for calculating NSM2, which separates platform and non-platform tests into two categories, has been validated through unit tests. BUG=b:269681390, b:274698307 TEST=Run the unit tests. Change-Id: I37ee6a5d6fb14cd195eca7fda9427a20a18790d8 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/bluetooth/+/4405327 Reviewed-by: Dean Liao <[email protected]> Reviewed-by: Manish Mandlik <[email protected]> Tested-by: Shyh-In Hwang <[email protected]> Commit-Queue: Shyh-In Hwang <[email protected]>