Unpack CK3 modification, only .txt and yml. Get rid of mod_files/

gistfile1.txt

#!/bin/bash

[[ $2 == "" ]] && exit 1
[[ -s "$1" ]] || exit 1

7z x "$1" -o$2 -r '*.txt' '*.yml'

cd $2
for x in `find -type d -name mod_files` ; do
    (
    cd `dirname $x`
    mv mod_files/* .
    rmdir mod_files
    )
done