[Tools] Change from ValueArg<bool> to SwitchArg.
This will have impact on scripted workflows using tools with switch arguments!
Until now the user had to specify a boolean value as 0 or 1.
someTool --switchArgument 0
The MR changes this
someTool --switchArgument
So the user needn't to remember if the boolean value has to be specified as '1'/'0' instead of 'true'/'false' or 'on/off'. The changes make the tools more intuitive to use.