lf hid improvements - encoding and long tag simulation

**DEVICE FIRMWARE UPDATE**
The code changes needed to support long tag emulation required an update to the device firmware. As of this patch, devices running older firmware will not be able to read or emulate HID tags until the firmware is updated. Additionally, devices with the firmware from this update or newer will not properly read or encode HID tags with a prior version client.

The 'lf hid encode' command has been further refined, and is now entirely parameterized to support use of fields other than facility code and card number. The client help data has been updated to show the correct syntax.