Implements #6639 - Initial commit for ISPConfig CLI command framework with some first basic modules as examples. More to be added

Avoid running checkzone for each rr when inserting/deleting a soa by deactivating the zone first, #6647

This reverts commit b571cfe7.

Too complex, alterative suggested

This reverts merge request !1812

Use PHP-FPM reload mode from server configuration when nginx_plugin ask for a PHP-FPM reload (Fixes #6581)