Hi there,
I have built extensions for Google Chrome before, even built a similar extension to this one, but I am happy to code it from scratch.
The only part I can't test and confirm for now is "this should be installed and uninstalled by windows admin only. not by any user.", I don't have access to a windows system at the moment, so I can't promise to be helpful in this regard. I did a quick research, seems there are ways people achieve that, but I have too little win system admin experience.
Regards,
Julijan