[calls] desktop: Add X-GNOME-UsesNotification

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit 23ab31360ae86c9e5df8bee7d743aee3bb7ff618
Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
Date:   Mon Oct 18 16:39:01 2021 +0200

    desktop: Add X-GNOME-UsesNotification
    
    This allows Calls to be listed in GNOME Control Center's 'Notification' panel
    as mentioned in https://docs.gtk.org/gio/class.Notification.html

 data/org.gnome.Calls-daemon.desktop.in | 1 +
 data/org.gnome.Calls.desktop.in        | 1 +
 2 files changed, 2 insertions(+)
---
diff --git a/data/org.gnome.Calls-daemon.desktop.in b/data/org.gnome.Calls-daemon.desktop.in
index 78dd32e1..8921cbd1 100644
--- a/data/org.gnome.Calls-daemon.desktop.in
+++ b/data/org.gnome.Calls-daemon.desktop.in
@@ -14,3 +14,4 @@ NoDisplay=true
 Terminal=false
 Categories=Network;GNOME;GTK;Telephony;
 X-GNOME-AutoRestart=true
+X-GNOME-UsesNotifications=true
diff --git a/data/org.gnome.Calls.desktop.in b/data/org.gnome.Calls.desktop.in
index f84ae136..b66bbdf5 100644
--- a/data/org.gnome.Calls.desktop.in
+++ b/data/org.gnome.Calls.desktop.in
@@ -14,3 +14,4 @@ Terminal=false
 Categories=Network;GNOME;GTK;Telephony;
 MimeType=x-scheme-handler/tel;x-scheme-handler/sip;x-scheme-handler/sips
 X-Purism-FormFactor=Workstation;Mobile;
+X-GNOME-UsesNotifications=true