Adds ext-ftp, php8.4 support and default.vcl for varnish 7.6

Updates PHP 8.1 sample for source guardian use

Adds MySQL 8.4 and corrects sample files

Adds php 83 sample and mariadb-114

Enables simltaneous use of dde and ddev via env variables

Adds support for PHP 8.3

Adds mailpit

Allows config files in php-cli home directory like .gitconfig

#17486 Adds env dir to customize e.g. .gitconfig or similar