Touchscreen support

[philpax]

This is a two-part issue (feel free to split them):

1. Touchscreen events don't appear to be accepted (e.g. I can't click or multi-touch zoom by touching the screen with any windows, but I can in Niri).
2. It should be possible to navigate the infinite canvas with the touchscreen (e.g. being able to pan/zoom). This could be quite useful, especially for laptops with a touchscreen and a not-so-large trackpad.

[malbiruk]

Yes, touchscreen isn't supported at all yet.

[valkyrieglasc]

would be cool ngl, imagine using a tablet with this kinda of wm

[Markus328]

Remote access through sunshine via touchscreen would be cool. I'm actually searching for some WM and rice that is well with touchscreen and this would be incredible