fix: only start one hotplug watcher, so connect fires once per plug - #36

fix: only start one hotplug watcher, so connect fires once per plug#36

TKDubsta wants to merge 2 commits into

node-usb:mainnode-usb/node-usb-rs:mainfrom

TKDubsta:fix/duplicate-hotplug-watcherTKDubsta/node-usb-rs:fix/duplicate-hotplug-watcherCopy head branch name to clipboard