Mention global hotkeys and PTT

[viraptor]

Description

Add the global hotkeys issue

I'm not aware of a better source to link. The issue is discussed all over the place, but there doesn't seem to be a protocol proposal.

Checklist

I have:

• 🤳 made sure that what I am adding is an app for end users, not a developer tool / library (no "wl-clipboard-rs")
• 🔗 checked that the link I am using refers to the root of the project (example, https://mpv.io) or GitHub repo if the first is not available
• 🤓 checked BOTH the name and the casing of the project(s) I am adding ("GNOME Terminal" and not "gnome-terminal", "bemenu" and not "Bemenu", etc.)
• 💣 checked that I am using spaces for indentation and that my levels are correct (no tabs!)
• ✋ checked that my section has the correct casing ("My section", and not "My Section")
• 📝 checked that the projects and / or the section are alphabetically sorted ("Clipboard manager" then "Color picker", "bemenu" then "Fuzzel")

[ilmari-lauhakangas]

This closes #146

viraptor: see the links in that issue, there is a protocol RFC at https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/56

[orowith2os]

Global hotkeys are now supported in xdg-desktop-portal.

[ilmari-lauhakangas]

Meanwhile, new RFC is https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/216