added ags notification service and ags media widget

ags/media/toggle_media

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+if [ ! -f ~/.ags_media ]; then
+    ags --bus-name media -c ~/dotfiles/ags/media/config.js &
+    echo $! > ~/.ags_media
+else
+    ags --bus-name media -c ~/dotfiles/ags/media/config.js --quit
+    rm ~/.ags_media
+fi