feat: support masking sensitive data in logx (#5003)

Signed-off-by: kevin <wanjunfeng@gmail.com>

core/logx/sensitive_test.go

@@ -0,0 +1,50 @@
+package logx
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+const maskedContent = "******"
+
+type User struct {
+	Name string
+	Pass string
+}
+
+func (u User) MaskSensitive() any {
+	return User{
+		Name: u.Name,
+		Pass: maskedContent,
+	}
+}
+
+type NonSensitiveUser struct {
+	Name string
+	Pass string
+}
+
+func TestMaskSensitive(t *testing.T) {
+	t.Run("sensitive", func(t *testing.T) {
+		user := User{
+			Name: "kevin",
+			Pass: "123",
+		}
+
+		mu := maskSensitive(user)
+		assert.Equal(t, user.Name, mu.(User).Name)
+		assert.Equal(t, maskedContent, mu.(User).Pass)
+	})
+
+	t.Run("non-sensitive", func(t *testing.T) {
+		user := NonSensitiveUser{
+			Name: "kevin",
+			Pass: "123",
+		}
+
+		mu := maskSensitive(user)
+		assert.Equal(t, user.Name, mu.(NonSensitiveUser).Name)
+		assert.Equal(t, user.Pass, mu.(NonSensitiveUser).Pass)
+	})
+}