Extended Mouse Report 2

This supersedes #693 and is based on #692.

This add Extended Mouse Descriptor, which uses 16-bit data(-32767 to 32767) for X and Y axis of mouse report, instead of 8-bit.

TODO:

[x] 16-bit width may be too much for vertical and horizontal scroll data -> scroll wheels still use 8bit
[ ] check descriptor of consumer mouse products in the market
[x] see how extended report is interpreted on OS -> on Xorg/Linux
[x] PS/2 mouse data -> Logitech MX510, TrackPoint
[x] ADB mouse data

tmk / tmk_keyboard