feat: add stdout and filesystem notification channels (#2925)

* feat: add filesystem and stdout notification channels

* configure through env vars

* compile

* feat: add compact option for debug notification channels

* fix channel mock generation

* avoid sensitive information in error message

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

* add review improvements

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

internal/notification/channels/twilio/channel.go

@@ -0,0 +1,28 @@
+package twilio
+
+import (
+	"github.com/caos/logging"
+	caos_errs "github.com/caos/zitadel/internal/errors"
+	"github.com/caos/zitadel/internal/notification/channels"
+	"github.com/caos/zitadel/internal/notification/messages"
+	twilio "github.com/kevinburke/twilio-go"
+)
+
+func InitTwilioChannel(config TwilioConfig) channels.NotificationChannel {
+	client := twilio.NewClient(config.SID, config.Token, nil)
+
+	logging.Log("NOTIF-KaxDZ").Debug("successfully initialized twilio sms channel")
+
+	return channels.HandleMessageFunc(func(message channels.Message) error {
+		twilioMsg, ok := message.(*messages.SMS)
+		if !ok {
+			return caos_errs.ThrowInternal(nil, "TWILI-s0pLc", "message is not SMS")
+		}
+		m, err := client.Messages.SendMessage(twilioMsg.SenderPhoneNumber, twilioMsg.RecipientPhoneNumber, twilioMsg.GetContent(), nil)
+		if err != nil {
+			return caos_errs.ThrowInternal(err, "TWILI-osk3S", "could not send message")
+		}
+		logging.LogWithFields("SMS_-f335c523", "message_sid", m.Sid, "status", m.Status).Debug("sms sent")
+		return nil
+	})
+}