[feature] add loki handler.

chatbot/src/main/kotlin/space/mori/chzzk_bot/chatbot/chzzk/ChzzkHandler.kt

@@ -204,6 +204,7 @@ class UserHandler(
     val logger: Logger,
     private var user: User,
     var streamStartTime: LocalDateTime?,
+    val chatLogger: Logger = LoggerFactory.getLogger("${channel.channelName}-chat"),
 ) {
     lateinit var client: ChzzkClient
     lateinit var chatChannelId: String
@@ -370,6 +371,7 @@ class UserHandler(
         GlobalScope.launch {
             delay(100L)
             client.sendChatToLoggedInChannel(msg.limitUtf8Length(100))
+            chatLogger.info("[SEND]${channel.channelName}: ${msg.limitUtf8Length(100)}{${msg.length} / 100}")
         }
     }
 }

chatbot/src/main/kotlin/space/mori/chzzk_bot/chatbot/chzzk/MessageHandler.kt

@@ -31,6 +31,7 @@ class MessageHandler(
 
     private val channel = handler.channel
     private val logger = handler.logger
+    private val chatLogger = handler.chatLogger
     private val listener = handler.listener
 
     private val dispatcher: CoroutinesEventBus by inject(CoroutinesEventBus::class.java)
@@ -372,7 +373,7 @@ class MessageHandler(
 
     internal fun handle(msg: SessionChatMessage, user: User) {
         if(msg.senderChannelId == ChzzkHandler.botUid) return
-
+        chatLogger.info("[RECV]${channel.channelName}: ${msg.content}{${msg.content.length} / 100}")
         val commandKey = msg.content.split(' ')[0]
         commands[commandKey.lowercase()]?.let { it(msg, user) }
     }