add perf test

.gitignore

data/2022-02-07_hysteresis.ipynb

data/2022-02-07_toolchanger-deviations.ipynb

data/2022-02-07_x-hysteresis.png

data/2022-02-07_y-hysteresis.png

data/2022-02-07_z-hysteresis.png

log/clank-stretch-log.md

log/videos/2022-02-03-clank-perf.mp4