QSV: add a capability for mfxExtCodingOption2
QSV: preliminary H.265 encoding support
QSV: wire HEVC QSV encoder
H.265: add level names and values
QSV: mark HEVC as supported in log
QSV: mark HEVC-unaware code with FIXME
Fix build
QSV: make profile_level parsing codec-agnostic
QSV: make interlacing check H.264-specific

AFAIK HEVC has no such restrictions
QSV: update B-frames check for HEVC
QSV: make some logginc codec-agnostic
QSV: disable Annex B to	MP4 conversion for HEVC

Our HEVC muxers expect Annex B extradata and bitstream.
QSV: enable H.265 profile/level control when QSV is enabled
QSV: enable info for HEVC encoder
QSV: rename encoder work object name to something more generic
QSV: load encoder plugins before encoding, too
Test without those
Try with just this one
OK then, just the other one
We need new capabilities after all