Runs the Clean Temp Directory feature.

This feature deletes all files and folders under your site's temp directory which are more than 60 seconds old, except for the index.html, index.htm, web.config, and .htaccess files directly under the temp directory.

The minimum file age of 60 seconds can be overridden with the -a / --age option. For example joomla.php admintools:temp:clear -a 3600 will only delete files and folders older than one hour (3600 seconds).