application: Log version on startup

Closes: https://gitlab.gnome.org/GNOME/calls/-/issues/652

Signed-off-by: Evangelos Ribeiro Tzaras <devrtz@fortysixandtwo.eu>
Part-of: <https://gitlab.gnome.org/GNOME/calls/-/merge_requests/745>

src/calls-application.c

@@ -476,6 +476,8 @@ startup (GApplication *application)
 
   G_APPLICATION_CLASS (calls_application_parent_class)->startup (application);
 
+  g_print ("Calls %s starting up...\n", VCS_TAG);
+
   if (!call_audio_init (&error))
     g_warning ("Failed to init libcallaudio: %s", error->message);