mm-core: Add QC specific MetaData and MediaDefs

- to integrate extened extractor with existing framework
  new QC specific MetaData and MediaDefs are required.
- create new files to avoid changing stock MetaData and
  MediaDefs file

Change-Id: If32e182337fa4be8b039367729ffa6cecefd8115

Conflicts:

	mm-core/inc/QCMediaDefs.h
	mm-core/inc/QCMetaData.h