New package: svt-av1 1.8.0-1

[Takashi Yano]

The following packages have been uploaded to the Cygwin distribution:

* svt-av1-1.8.0-1
* libsvtav1-1.8.0-1
* libsvtav1-devel-1.8.0-1
* libsvtav1-doc-1.8.0-1

The Scalable Video Technology for AV1 (SVT-AV1 Encoder and Decoder) is an AV1-compliant software encoder/decoder library. The work on the SVT-AV1 encoder targets the development of a production-quality AV1-encoder with performance levels applicable to a wide range of applications, from premium VOD to real-time and live encoding/transcoding. The SVT-AV1 decoder implementation targets future codec research activities.