samedir: added way to open terminal in same dir

modified version of https://github.com/lukesmithxyz/voidrice added.
this is already detached from the current terminal, so just append a '&'
(like this: 'samedir &') and it opens a new terminal in the same dir.
you can then close the terminal that called samedir

.local/bin/etc/samedir

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+# Open a terminal window in the same directory as the currently active window.
+# Obtained from https://github.com/lukesmithxyz/voidrice
+
+PID=$(xprop -id "$(xprop -root | awk '/_NET_ACTIVE_WINDOW\(WINDOW\)/{print $NF}')" | grep -m 1 PID | cut -d " " -f 3)
+PID="$(pstree -lpA "$PID" | tail -n 1 | awk -F'---' '{print $NF}' | sed -re 's/[^0-9]//g')"
+cd "$(readlink /proc/"$PID"/cwd)" || return 1
+setsid "$TERMINAL"