Add prestahost.cz version

The branch prestashop.cz seems to have been forked from 2012 version of this module, therefore before Prestashop have start to use Github.

I have downloaded it from @maximo88 post https://www.prestashop.com/forums/topic/75458-module-cash-on-delivery-cod-v05-with-fixed-and-percentage-fees/page-7#entry1936755