Adds IMFCreator interface, plus new features for MFPreview and MFWriter.
Features
- Added IMFCreator interface to create and manage an object in an external process.
- MFPreview - Added 'audio_renderer.reset' property to refresh a list of available renderers.
- MFWriter - Added ability to switch a target file while encoding with WriterSet method.
Fixes
- MWriter - Fixed playback while recording feature.
- MCCDisplay - Fixed rare symbols corruption on preview.
- MFReader - Fixed high FPS files playback.
- CharGen - Fixed ShowItem method called for grouped element.
- MFDeviceNDI - Fixed signal loss issue.
