Print out the goroutine id (#3433)

The TXT logger prints out the actual go routine ID

This feature depends on 'loggoroutine' build tag

```go build -tags loggoroutine```

formatter/hook/additional_goroutine.go

@@ -0,0 +1,12 @@
+//go:build loggoroutine
+
+package hook
+
+import (
+	"github.com/petermattis/goid"
+	log "github.com/sirupsen/logrus"
+)
+
+func additionalEntries(entry *log.Entry) {
+	entry.Data[EntryKeyGoroutineID] = goid.Get()
+}