add support for ydotool

[alexminder]

https://github.com/ReimuNotMoe/ydotool can be used as alternative for wtype for autotype feature. It can work not only for wayland apps.

[ayushnix]

Sorry, but this is mentioned here as one of the features I'm not really interested in implementing because using ydotool means giving your user access to /dev/uinput, normally owned only by the root user.

The situation for virtual keyboard input is kinda messy right now with wlroots, GNOME, and KDE doing their own thing although KDE and wlroots both support input-method. Unfortunately, wtype doesn't use this protocol yet. If it does or if another virtual keyboard backend comes up which supports input-method, I'll switch tessen to that program. However, using /dev/uinput will not be supported.

[ayushnix]

These links should help explain issues when using /dev/uinput.