Provides a functions to execute an async request.
Used for cron to be executed after the index.php script returns to the client
Inspiration: https://mindsers.blog/fr/post/appel-dune-fonction-asynchrone-en-php/
swAsyncCurl($addr,$data)
swAsyncCron()
$swBaseHrefFolder
$addr, $data, $errno, $errstr, $post_string, $swCronToken
Short variables: $fp, $out, $url
file, json, str
fsockopen, parse_url