created script for adding firefox addons

salt/states/files/install_firefox_addon

@@ -0,0 +1,13 @@
+#!/bin/bash
+set -aeo pipefail
+filename="$1"
+url="$2"
+tmpfile=$(mktemp /tmp/install_firefox_addon.XXXXXX)
+
+
+
+curl -sLo "$tmpfile" "$url"
+for p in "$(sed -n 's/^Path=\(.*\)$/\1/p' $HOME/.mozilla/firefox/profiles.ini)";do
+    cp "$tmpfile" "$HOME/.mozilla/firefox/$p/$filename"
+done
+rm "$tmpfile"