[host] dxgi: use HDR10 instead of HDR16 to save bandwidth #2316

Job	Run time
host-windows-cross	45s
host-linux	41s
docs	54s
module	24s
client (gcc, g++, xdg-shell, Release)	1m 15s
obs (gcc)	32s
client (gcc, g++, xdg-shell, Debug)	50s
obs (clang)	45s
client (gcc, g++, libdecor, Release)	1m 0s
host-windows-native	1m 1s
client (gcc, g++, libdecor, Debug)	58s
client (clang, clang++, xdg-shell, Release)	1m 4s
client (clang, clang++, xdg-shell, Debug)	53s
client (clang, clang++, libdecor, Release)	1m 26s
client (clang, clang++, libdecor, Debug)	50s
	13m 18s

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