Sidewheel support

[tym-project]

Added logic to handle sidewheel on MX Master (registered as horizontal scroll) to handle volume up and volume down.

Also fixed initial keyboard detection :

• On Debian 10 devices are described with "XXXX Keyboard" vs. "XXX keyboard".... this might be distribution specific
• With my MX Master connected as a bluetooth device, it seems to also be detected as a keyboard... added inital "grep -v " to exclude based on device name (this might not be very robust depending on distrib and device)