adds some basic commands:
log - print syncthing "recent" log
restart - restart syncthing daemon
shutdown - shutdown syncthing daemon
print_errors - print errors visible in web UI
clear_errors - clear errors in the web UI
post_error - posts a custom error message in the web UI
print_id - print this node ID
reset_db - reset the index
rescan - rescan a folder or 'all'
override - override local changes for a folder