added niri install script

niri/sway_startup

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+background=$1
+blurred_bg=/tmp/blurred_"$(basename ${background})"
+
+echo "Setting background to ${background}"
+swaybg -m fill -i "$1" &
+
+echo "Convert ${background} to ${blurred_bg} and set swayidle"
+convert ${background} -blur 0x12 ${blurred_bg}
+swayidle -w timeout 601 "niri msg action power-off-monitors" timeout 600 "swaylock -f -i ${blurred_bg}" before-sleep "swaylock -f -i ${blurred_bg}" &
+