Fsk demod fixes and additions to client for offline demoding

hardened up some of the fsk demod values, it works more consistently for both HID and IO prox in my testing. 
how is it for everyone else?

also adjusted data fskdemod to do a raw demod of the fsk data instead of guessing it was hid, and added a data fskdemodhid and a data fskdemodio.