• qt/org.gnupg.pinentry-qt.desktop.in: Request keystate permission

Kwin restricts access to the required wayland protocol to
applications that request permission in their desktop file.

requires D573: qt: Fix icon on wayland

1. Apply D573: qt: Fix icon on wayland
2. Install the desktop file to /usr/share/applications/org.gnupg.pinentry-qt.desktop (the location is important! make sure the exec line points at the correct executable, not at a symlink or something. Kwin verifies this)
3. Run pinentry, check that capslock indicator appears