decklink: Updated DeckLink SDK to 11.2 to support DeckLink 8K Pro
This branch updates the DeckLink SDK to 11.2, and replaces the duplex-mode option by a profile option, to support the new DeckLink 8K Pro.
Please note that there's still some work to do:
- update the Windows & OSX DeckLink SDK
- test the duplex features
- eventualy update the documentation of the profile option?