new /v2 subdirectory

v2/simple-opt-tracer.go

@@ -0,0 +1,18 @@
+package cli
+
+import (
+	"fmt"
+	"io"
+)
+
+type SimpleOptionTracer struct {
+	w io.Writer
+}
+
+func NewSimpleOptionTracer(w io.Writer) *SimpleOptionTracer {
+	return &SimpleOptionTracer{w: w}
+}
+
+func (tr *SimpleOptionTracer) TraceCliOption(name string, valueType string, value any) {
+	fmt.Fprintf(tr.w, "Option: %s, Type: %s, Value: %v\n", name, valueType, value)
+}