chore: move the go code into a subfolder

apps/api/internal/notification/channels/email/config.go

@@ -0,0 +1,17 @@
+package email
+
+import (
+	"github.com/zitadel/zitadel/internal/notification/channels/smtp"
+	"github.com/zitadel/zitadel/internal/notification/channels/webhook"
+)
+
+type Config struct {
+	ProviderConfig *Provider
+	SMTPConfig     *smtp.Config
+	WebhookConfig  *webhook.Config
+}
+
+type Provider struct {
+	ID          string `json:"id,omitempty"`
+	Description string `json:"description,omitempty"`
+}