Added a null mode

I notice that when I put my monitors to sleep (windows power shortcut that turns the power button into monitor off while leaving computer active), something from this device is waking up the machine. changing the one process that I believe to be the culprit alone did not fix it. so I've implimented a null mode. currently set to another unused HID key (HELP), but you can change it, NULL mode cause the system to DROP ALL packets to the pc. no keyboard data, no mouse data, no mouse movement, no empty packets from the clear all keys function, etc. everything dropped. this way nothing wakes up your screen. hitting the HELP key again deactivates this mode.

deskhop-barebons

this will likely be the only release.