Foundation Classes - Return value is overridden by OCCT #528

Foundation Classes - Return value is overridden by OCCT #528

- Removed OSD_PerfMeter.h and integrated its functionality directly into OSD_PerfMeter.hxx.
- Updated OSD_PerfMeter to manage stopwatches through a singleton StopwatchStorage class.
- Enhanced meter initialization and management to support shared meters by name.
- Implemented methods for starting, stopping, and printing elapsed time for performance meters.
- Added OSD_PerfMeter_Test.cxx to implement unit tests for OSD_PerfMeter functionality.
- Test bug23237 is delete as it refers to removed code.