Add tmux and fzf to dev packages. Add setup_ntp script

setup/packages/development

@@ -1 +1 @@
-neovim git git-lfs the_silver_searcher python-pynvim wmctrl
+neovim git git-lfs the_silver_searcher python-pynvim wmctrl tmux fzf

setup/setup_ntp

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+set -Eeuo pipefail
+
+if (( $EUID != 0 )); then
+    echo "Should be run as root"
+    exit 1
+fi
+
+systemctl enable systemd-timesyncd.service
+timedatectl set-ntp true