Allow arguments to have sub-command 'options', so an argument like 'action'
can have a specified list of values, each with respective help output.

And install initial data in target language. Also configure help tip
popovers to be in the configured, default system language.

This will allow an administrator to visualize the files changed in the
deployment before actually copying out the new files

Inside cli modules, use internal stdout and stderr objects rather than
writing directly to the PHP outputs. This will allow for significantly
easier regression testing integration.

Include all the modules for `php manage.php --help` invocation. Also, pass
the parsed arguments and options to the Module::run() implementation.

Which will allow for a modular approach to command-line scripting of the
osTicket system. Hopefully, it will alleviate the need to copy+paste code
between scripts and otherwise duplicate functionality between locations. It
will also allow for easier administration of osTicket by shipping scripts to
do things like database maintenance, statistics exports (collectd), data
exports, etc.

The first example script include the capability to unpack the osTicket
installation/upgrade tarball to the destination install path with optionally
placing the include folder in a different location. The script will monkey
patch main.inc.php so that the INCLUDE_DIR define will point to the
installed location of the include/ folder.