include by default the composer.json localized at the root dir

Author: Halleck45

src/Hal/Metric/System/Packages/Composer/Composer.php

@@ -70,7 +70,10 @@ protected function getComposerJsonRequirements()
 
         // find composer.json files
         $finder = new Finder(['json'], $this->config->get('exclude'));
-        $files = $finder->fetch($this->config->get('files'));
+
+        // include root dir by default
+        $files = array_merge($this->config->get('files'), ['./']);
+        $files = $finder->fetch($files);
 
         foreach ($files as $filename) {
             if (!\preg_match('/composer(-dist)?\.json/', $filename)) {