Move MetaData from foundation to libmediaextractor

While doing that helper method, MakeAACCodecSpecificData, was
moved from foundation to libstagefright_metadatautils.

Test: cts-tradefed run cts-dev --module CtsMediaTestCases --compatibility:module-arg
Change-Id: Id0b1dcc0e535815c402010c757481229eec578dc
CtsMediaTestCases:include-annotation:android.platform.test.annotations.RequiresDevice
Bug: 67908544