Created Logger factory and logger config, and added logger dependencies

config/autoload/logger.global.php

@@ -1,10 +1,30 @@
 <?php
+use Monolog\Handler\RotatingFileHandler;
+use Monolog\Logger;
+
 return [
 
     'logger' => [
+        'formatters' => [
+            'dashed' => [
+                'format' => '[%datetime%] %channel%.%level_name% - %message% %context%' . PHP_EOL,
+                'include_stacktraces' => true,
+            ],
+        ],
+
+        'handlers' => [
+            'rotating_file_handler' => [
+                'class' => RotatingFileHandler::class,
+                'level' => Logger::INFO,
+                'filename' => 'data/log/shlink_log.log',
+                'max_files' => 30,
+                'formatter' => 'dashed',
+            ],
+        ],
+
         'loggers' => [
             'Shlink' => [
-                'handlers' => [],
+                'handlers' => ['rotating_file_handler'],
             ],
         ],
     ],

config/autoload/logger.local.php.dist

@@ -0,0 +1,14 @@
+<?php
+use Monolog\Logger;
+
+return [
+
+    'logger' => [
+        'handlers' => [
+            'rotating_file_handler' => [
+                'level' => Logger::DEBUG,
+            ],
+        ],
+    ],
+
+];