Update module properties for ProgressBar in SDK

I wanted to use ProgressBar to show battery level of my device in a car dashboard app. I’ve got used to using the built in Qt docs in SDK for modules, but in this case, the onboard docs need updating to reflect properties the SFOS offers.

The properties currently shown for ProgressBar QML Type are;

color : color
maximum : int
minimum : int
secondColor : color
value : int

The properties for ProgressBar QMl Type SailfishOS are;

highlighted : bool
indeterminate : bool
label : string
maximumValue : real
minimumValue : real
progressValue : real
value : real
valueText : string