AetherEngine 2.0.2

Follow-up bugfix to 2.0.1's Dolby Vision Profile 5 work.

Fixed

Profile 5 MP4 sources whose hvcC carries only the configuration header (no VPS / SPS / PPS arrays) now play correctly.

2.0.1's colr fix put the PQ transfer signal on the output sample entry but AVPlayer still failed the asset with `CoreMediaErrorDomain -4` because `CMVideoFormatDescription` cannot be built from a `dvh1` sample entry whose configuration record has no parameter set arrays. The matroska demuxer doesn't hit this because matroska parameter sets live in `CodecPrivate`, which FFmpeg lifts into `codecpar.extradata` as a complete annex-B sequence that the mp4 muxer's `ff_isom_write_hvcc` then rebuilds properly.

The engine now scans the first IRAP packet for VPS / SPS / PPS NAL units, builds a proper hvcC byte sequence (header + 3 parameter set arrays), and replaces the output stream's `codecpar.extradata` before `avformat_write_header`. Gated on the precise signal: HEVC codec, extradata ≥ 23 B with byte 22 = 0, NALU length size 4.

Verified locally against the issue #19 sample: loopback playback advances in QuickTime / AVPlayer, init.mp4 has all four boxes (`dvh1` + `hvcC` 125 B with parameter sets + `colr nclx 9/16/9` + `dvcC` P5 L6 compat=0), colors render correctly.

Compatibility

No API or behavior changes outside the P5 path. Pinning `from: "2.0.0"` already picks this up.

Full changelog: 2.0.1...2.0.2