[MODULES] Rename extensions to modules, add example plugin, change plugin location

plugins/Test/Controller/TestController.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Controller;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Response;
+
+class TestController extends AbstractController
+{
+    public function __invoke()
+    {
+        return new Response('<div style="background: #333; text: #999"> Test controller </div>');
+    }
+}

plugins/Test/Test.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace Plugin\Test;
+
+class Test
+{
+    public function onTest(string $foo)
+    {
+        dump('Event handled: ' . $foo);
+    }
+}

plugins/Test/manifest.yaml

@@ -0,0 +1,15 @@
+info:
+  name: 'Example'
+  version: '0.1'
+  author: 'Hugo Sales'
+  homepage: '{project_url}'
+  description: |
+    Test plugin
+    Description can use multiple lines
+
+permissions:
+  database:
+    - 'table1': 'r'
+    - 'table2': 'rw'
+  filesystem:
+    - 'folder': 'rw'