Add vendored dependencies

vendor/github.com/coreos/go-systemd/v22/LICENSE

vendor/github.com/coreos/go-systemd/v22/NOTICE

vendor/github.com/coreos/go-systemd/v22/daemon/sdnotify.go

vendor/github.com/coreos/go-systemd/v22/daemon/watchdog.go

vendor/github.com/d5/tengo/v2/.gitignore

vendor/github.com/d5/tengo/v2/.goreleaser.yml

vendor/github.com/d5/tengo/v2/LICENSE

vendor/github.com/d5/tengo/v2/Makefile

vendor/github.com/d5/tengo/v2/README.md

vendor/github.com/d5/tengo/v2/builtins.go

vendor/github.com/d5/tengo/v2/bytecode.go

vendor/github.com/d5/tengo/v2/compiler.go

vendor/github.com/d5/tengo/v2/doc.go

vendor/github.com/d5/tengo/v2/errors.go

vendor/github.com/d5/tengo/v2/formatter.go

vendor/github.com/d5/tengo/v2/go.mod

vendor/github.com/d5/tengo/v2/go.sum

vendor/github.com/d5/tengo/v2/instructions.go

vendor/github.com/d5/tengo/v2/iterator.go

vendor/github.com/d5/tengo/v2/modules.go