mediainfo information display for files created by file writing filters (similar to source file filters)

[mikecopperwhite]

Like a source file filter property page, the property page for sink files set with IFileSinkFilter should also contain mediainfo tab if enabled that displays info about the previously written file.

This will have to be robust against a non-existing sink file, not prevent the graph from running by locking the sink file and not attempt to parse sink files if the graph is currently running.