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/txt/format.go

@@ -0,0 +1,31 @@
+//go:build !loggoroutine
+
+package txt
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/formatter/hook"
+)
+
+func (f *TextFormatter) Format(entry *logrus.Entry) ([]byte, error) {
+	var fields string
+	keys := make([]string, 0, len(entry.Data))
+	for k, v := range entry.Data {
+		if k == hook.EntryKeySource {
+			continue
+		}
+		keys = append(keys, fmt.Sprintf("%s: %v", k, v))
+	}
+
+	if len(keys) > 0 {
+		fields = fmt.Sprintf("[%s] ", strings.Join(keys, ", "))
+	}
+
+	level := f.parseLevel(entry.Level)
+
+	return []byte(fmt.Sprintf("%s %s %s%s: %s\n", entry.Time.Format(f.timestampFormat), level, fields, entry.Data[hook.EntryKeySource], entry.Message)), nil
+}