initial checkin

Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>

logging/logger.go

@@ -0,0 +1,18 @@
+package Logging
+
+import (
+	"log"
+)
+
+func LoggingCallbacks(loggers ...*log.Logger) (func(string, ...any), func(string, ...any)) {
+	switch len(loggers) {
+	case 0:
+		def := log.Default()
+		return def.Printf, def.Printf
+	case 1:
+		log0 := loggers[0]
+		return log0.Printf, log0.Printf
+	default:
+		return loggers[0].Printf, loggers[1].Printf
+	}
+}