update handler (#2)

* 🔧 Remove commented-out regex patterns and initialization in config.

* ✨ Add NATS message publisher with configuration 📩🚀

* ✨ Add new PlainTextMarshaler and refactor handler in nats package.

internal/config/config.go

@@ -15,6 +15,7 @@ var MyConfig *Config
 type Config struct {
 	Nats         NatsConfig
 	Subscription SubscriptionConfig
+	Publisher    PublisherConfig
 	Timeouts     TimeoutsConfig
 	Hasura       HasuraConfig
 }
@@ -30,6 +31,10 @@ type SubscriptionConfig struct {
 	QueueGroup string `mapstructure:"queue_group"`
 }
 
+type PublisherConfig struct {
+	Topic string `mapstructure:"topic"`
+}
+
 type TimeoutsConfig struct {
 	Server        time.Duration `mapstructure:"server"`
 	ReconnectWait time.Duration `mapstructure:"reconnect_wait"`