Add support for PIC16F1455

[qwertymodo]

Simple request, the only change that needs to happen is that any #ifdef (_16F1454) lines should add || (_16F1455). On the library side, that's just usb_hal.h, and then a few places in the example applications, like the config #pragmas and initialization routines. I've tested it with the mouse and composite HID examples and it works great.