Mouse support for scroll and extra buttons about kanata

[jtroo]

I was playing around with this when adding mouse buttons and I found that using the scroll buttons (4-7) aren't simple to do as sending the button press. The button press can be sent but I found the input was ignored. There's a separate type of event that needs to be sent to uinput (EV_REL and REL_WHEEL).

It's certainly doable but I was too lazy to do it when I added the three mouse buttons, which is all I cared about at the time.

For browser back and forward, there are buttons (not the mouse buttons though) already added: fwd+bck. If you want the specific mouse buttons though, it shouldn't be too hard to add it. I didn't bother to add it myself though since it doesn't work due to a limitation in the VM driver, and the keyboard forward/back worked for my needs.

[13minutes-yt]

The right mouse button (mrgt) is a savior in Linux with all these touchpads and drivers. The wheel I use for zooming, using another app for that(though I am trying to ditch it like I ditched xcape). fwd+bck are great additions, I missed seeing them.

Keep up the good work.!