Add support for tablets/stylus

[butzo]

Circumstances
I am using cachyos/hyprland on a convertible laptop. When i use the device in tablet mode (lid opened folded 360°) i cannot access the mouse pad and i do not always have a mouse at hand. So i would like to use my stylus to select the screenshot area and copy it to rnote.
I use slurp as part of grimblast, but the problem applies to every tool that uses slurp.

Problem
The stylus does not work for selecting the screenshot area.
It works fine though for note taking and selecting text.

Solution
Please add support for styluses.

I have yet to find a selection tool that works with the stylus. I use my finger (touchscreen) or a mouse as workaround.

[tmccombs]

This is work that would need to be done by someone who actually has such a device to test on.

[butzo]

I would be willing to give it a try, but I would need support because I have neither worked with the wayland code base nor would I know where to start.