foamList: Added support for listing fvOptions, functionObjects and turbulence models

Usage: foamList [OPTIONS]
options:
  -case <dir>       specify alternate case directory, default is the cwd
  -compressibleTurbulenceModels
                    List compressible turbulenceModels
  -functionObjects  List functionObjects
  -fvOptions        List fvOptions
  -incompressibleTurbulenceModels
                    List incompressible turbulenceModels
  -noFunctionObjects
                    do not execute functionObjects
  -registeredSwitches
                    List switches registered for run-time modification
  -switches         List switches declared in libraries but not set in
                    etc/controlDict
  -unset            List switches declared in libraries but not set in
                    etc/controlDict
  -srcDoc           display source code in browser
  -doc              display application documentation in browser
  -help             print the usage