Support for tap event

[cshaa]

Prerequisites

• [X] Put an X here if you have done all the necessary stuff.

Description

It would be quite useful if Fusuma had the ability to also detect the tap events. That would for example allow me to use both two-finger tap and right-corner click for the emulation of the right mouse button. AFAIK there is currently no way to achieve this behavior in Ubuntu 18.04, see my SO question.

Adding tap and possibly doubletap with options for two, three and four fingers would IMHO greatly extend the capabilities of Fusuma.

[iberianpig]

@m93a fusuma depends on libinput-debug-events. Unfortunately, libinput-debug-events doesn't recognize tapping and coordinate data(x, y) on a touchpad.

[iberianpig]

@m93a I released fusuma-plugin-tap. This plugin detects 1~4 fingers tap gestures and hold(long press) gestures.