isom: add 'm1v ' tag

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
isom: add 'flic' tag
isom: add some BOXX tags
riff: Add ITRK tag

Some players, like foobar2000 or modern versions of WMP, create WAV
files using the ITRK tag for track instead of IPRT
riff: add ISMP/timecode tag