[CORE][EVENTS] Bring existing Events and Boostrapper back

- Adapt the existing event system to rely on Symfony's event dispatcher

src/Util/Log.php

@@ -0,0 +1,26 @@
+<?php
+namespace App\Util;
+
+use Psr\Log\LoggerInterface;
+
+class Log
+{
+    private static ?LoggerInterface $logger;
+
+    public static function setLogger($l): void
+    {
+        self::$logger = $l;
+    }
+    public static function error(string $msg): void
+    {
+        self::$logger->error($msg);
+    }
+    public static function info(string $msg): void
+    {
+        self::$logger->info($msg);
+    }
+    public static function debug(string $msg): void
+    {
+        $logger->debug($msg);
+    }
+}