feat: add zibi and unset zibi command, bump rob to 1.8.4

src/main/kotlin/cn/rtast/fancybot/items/BaisiItem.kt

@@ -12,19 +12,18 @@ import cn.rtast.fancybot.util.Http
 import cn.rtast.fancybot.util.item.Item
 import cn.rtast.rob.entity.GroupMessage
 import cn.rtast.rob.util.ob.MessageChain
-import cn.rtast.rob.util.ob.OBMessage
+import cn.rtast.rob.util.ob.OneBotListener
 
 class BaisiItem : Item() {
     override val itemNames = listOf("baisi", "白丝", "bs")
     override val itemPrice = 70
 
-    override suspend fun redeemInGroup(listener: OBMessage, message: GroupMessage, after: Long) {
+    override suspend fun redeemInGroup(listener: OneBotListener, message: GroupMessage, after: Long) {
         val url = Http.get<Baisi>("https://v2.api-m.com/api/baisi").data
         val msg = MessageChain.Builder()
             .addAt(message.sender.userId)
             .addImage(url)
             .build()
         listener.sendGroupMessage(message.groupId, msg)
-
     }
 }