* add two cases of haas506

* have repaired  picture-displayed errors of two cases of haas506

* upload a case of haas506 named rc522_write_read

* upload a case of haas506 named lbs_demo

* upload a case for haas506 named air-detector

* revised a readme.md in human_existence_detector
Co-authored-by: NskylarCai <75605680+skylarCai@users.noreply.github.com>

* add two cases of haas506

* have repaired  picture-displayed errors of two cases of haas506

* upload a case of haas506 named rc522_write_read

* upload a case of haas506 named lbs_demo

* upload a case for haas506 named air-detector