NOTICE.md

Licence notices

1. ./artifact.go is adapted from https://github.com/aquasecurity/trivy (Apache 2 Licence)
2. ./image/daemon/containerd.go is adapted from https://github.com/aquasecurity/trivy (Apache 2 Licence)
3. ./image/daemon/docker.go is adapted from https://github.com/aquasecurity/trivy (Apache 2 Licence)
4. ./image/daemon/image.go is adapted from https://github.com/aquasecurity/trivy (Apache 2 Licence)