feat: Show the requirement checker in the PHAR info

Related to box-project#857

[skip ci]

demo/composer.json

@@ -0,0 +1,5 @@
+{
+  "conflict": {
+    "ext-aerospike": "*"
+  }
+}

demo/index.php

@@ -0,0 +1,4 @@
+<?php declare(strict_types=1);
+
+echo "Hello world!";
+

demo/vendor/autoload.php

@@ -0,0 +1,25 @@
+<?php
+
+// autoload.php @generated by Composer
+
+if (PHP_VERSION_ID < 50600) {
+    if (!headers_sent()) {
+        header('HTTP/1.1 500 Internal Server Error');
+    }
+    $err = 'Composer 2.3.0 dropped support for autoloading on PHP <5.6 and you are running '.PHP_VERSION.', please upgrade PHP or use Composer 2.2 LTS via "composer self-update --2.2". Aborting.'.PHP_EOL;
+    if (!ini_get('display_errors')) {
+        if (PHP_SAPI === 'cli' || PHP_SAPI === 'phpdbg') {
+            fwrite(STDERR, $err);
+        } elseif (!headers_sent()) {
+            echo $err;
+        }
+    }
+    trigger_error(
+        $err,
+        E_USER_ERROR
+    );
+}
+
+require_once __DIR__ . '/composer/autoload_real.php';
+
+return ComposerAutoloaderInit64139b68ced9689093febaf5b29b51c5::getLoader();