* cmd_runner: add __call__ method to invoke context
* change xfconf to use the callable form
* add changelog fragment
* Update changelogs/fragments/4791-cmd-runner-callable.yaml
Co-authored-by: Felix Fontein <felix@fontein.de>
Co-authored-by: Felix Fontein <felix@fontein.de>
(cherry picked from commit 739ca737f1)
Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>