add logging config (#127)

config/logging.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+use Psr\Log\LoggerInterface;
+use Psr\Log\LogLevel;
+use ZM\Logger\ConsoleLogger;
+
+return [
+    'level' => LogLevel::DEBUG,
+    'logger' => static function (): LoggerInterface {
+        $worker_id = app('worker_id');
+
+        $logger = new ConsoleLogger(zm_config('logging.level'));
+        $logger::$format = "[%date%] [%level%] [#{$worker_id}] %body%";
+        $logger::$date_format = 'Y-m-d H:i:s';
+        // 如果你喜欢旧版的日志格式，请取消下行注释
+//        $logger::$date_format = 'm-d H:i:s';
+        return $logger;
+    },
+];