feat: add some feature

src/main/kotlin/cn/rtast/fancybot/cmd/GenerateDefaultConfig.kt

@@ -0,0 +1,18 @@
+/*
+ * Copyright © 2024 RTAkland
+ * Author: RTAkland
+ * Date: 2024/8/30
+ */
+
+
+package cn.rtast.fancybot.cmd
+
+import cn.rtast.fancybot.DEFAULT_CONFIG
+import cn.rtast.fancybot.util.toJson
+import java.io.File
+
+fun main() {
+    val file = File("src/main/resources/config.json")
+    file.writeText(DEFAULT_CONFIG.toJson())
+    println("Generated default config")
+}