hlsdemux: Add parsing EXT-X-MAP for fmp4 support
For fmp4 support, EXT-X-MAP
tag is required to download initial fragment moov
Closes: #504 (closed) and #490 (closed)
For fmp4 support, EXT-X-MAP
tag is required to download initial fragment moov
Closes: #504 (closed) and #490 (closed)