chore: introduce logger and save log into file

src/main/kotlin/cn/rtast/fancybot/util/Logger.kt

@@ -0,0 +1,18 @@
+/*
+ * Copyright © 2024 RTAkland
+ * Author: RTAkland
+ * Date: 2024/10/7
+ */
+
+
+package cn.rtast.fancybot.util
+
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
+import org.slf4j.event.Level
+
+object Logger {
+    inline fun <reified T> getLogger(): Logger {
+        return LoggerFactory.getLogger(T::class.simpleName).also { it.atLevel(Level.INFO) }
+    }
+}

src/main/kotlin/cn/rtast/fancybot/util/Misc.kt

@@ -31,7 +31,8 @@ fun initCommandAndItem(rob: ROneBotFactory) {
 }
 
 fun initFilesDir() {
-    File("./$ROOT_PATH/caches/images").also { it.mkdirs() }
+    File("$ROOT_PATH/caches/images").also { it.mkdirs() }
+    File("$ROOT_PATH/logs").also { it.mkdirs() }
 }
 
 fun initSetuIndex() {