Add event log

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/event/internal/InternalEventListeners.kt

@@ -14,15 +14,15 @@ import net.mamoe.mirai.event.Event
 import net.mamoe.mirai.event.EventDisabled
 import net.mamoe.mirai.event.Listener
 import net.mamoe.mirai.event.ListeningStatus
-import net.mamoe.mirai.utils.LockFreeLinkedList
-import net.mamoe.mirai.utils.MiraiDebugAPI
-import net.mamoe.mirai.utils.MiraiLogger
+import net.mamoe.mirai.utils.*
 import net.mamoe.mirai.utils.io.logStacktrace
 import kotlin.coroutines.CoroutineContext
 import kotlin.coroutines.coroutineContext
 import kotlin.jvm.JvmField
 import kotlin.reflect.KClass
 
+internal val EventLogger: MiraiLoggerWithSwitch = DefaultLogger("Event").withSwitch(false)
+
 @PublishedApi
 internal fun <L : Listener<E>, E : Event> KClass<out E>.subscribeInternal(listener: L): L {
     this.listeners().addLast(listener)
@@ -103,6 +103,8 @@ internal object EventListenerManager {
 internal suspend inline fun Event.broadcastInternal() {
     if (EventDisabled) return
 
+    EventLogger.info { "Event broadcast: $this" }
+
     callAndRemoveIfRequired(this::class.listeners())
 
     var supertypes = this::class.supertypes