feat(testspeed): add friction/collision details to final output (#947)#954

Tanisha-Sharma005 wants to merge 2 commits intogoogle-deepmind:maingoogle-deepmind/mujoco_warp:mainfrom

Tanisha-Sharma005:fix/947-testspeed-collision-statsTanisha-Sharma005/mujoco_warp:fix/947-testspeed-collision-statsCopy head branch name to clipboard