Added scripts to hibernate, lock screen or suspend

i3-hibernate

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+save-emacs-files
+kdesu -c "systemctl hibernate"

i3-lock-screen

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+save-emacs-files
+xscreensaver-command --lock

i3-suspend

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+save-emacs-files
+kdesu -c "systemctl suspend"