Adds PluginManager core class

app/core/PluginManager.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Core;
+
+class PluginManager
+{
+    /**
+     * Loads all enabled plugins from the given directory.
+     *
+     * @param string $pluginsDir
+     * @return array<string, array{path: string, meta: array}>
+     */
+    public static function load(string $pluginsDir): array
+    {
+        $enabled = [];
+        foreach (glob($pluginsDir . '*', GLOB_ONLYDIR) as $pluginPath) {
+            $manifest = $pluginPath . '/plugin.json';
+            if (!file_exists($manifest)) {
+                continue;
+            }
+            $meta = json_decode(file_get_contents($manifest), true);
+            if (empty($meta['enabled'])) {
+                continue;
+            }
+            $name = basename($pluginPath);
+            $enabled[$name] = [
+                'path' => $pluginPath,
+                'meta' => $meta,
+            ];
+            $bootstrap = $pluginPath . '/bootstrap.php';
+            if (file_exists($bootstrap)) {
+                include_once $bootstrap;
+            }
+        }
+        return $enabled;
+    }
+}