Add more support for command line parameters
Add more support for command line parameters

* Can now open one or more INF files
* Can open file(s) and start a search via -s
* Can show available command line params via -h

Signed-off-by: Graeme Geldenhuys <7276345f2a225509983176907daf138ab07f6798@gmail.com>

wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI