refactor(modules): extract castopod parts into a modules/ folder for a scalable HMVC structure

- create Admin, Analytics, Auth, Fediverse and Install modules in the root modules/ folder
- rename
ActivityPub to Fediverse

modules/Analytics/Controllers/AnalyticsController.php

@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright  2020 Podlibre
+ * @license    https://www.gnu.org/licenses/agpl-3.0.en.html AGPL3
+ * @link       https://castopod.org/
+ */
+
+namespace Modules\Analytics\Controllers;
+
+use CodeIgniter\Controller;
+use CodeIgniter\Exceptions\PageNotFoundException;
+use CodeIgniter\HTTP\ResponseInterface;
+use CodeIgniter\Model;
+
+class AnalyticsController extends Controller
+{
+    protected Model $analyticsModel;
+
+    protected string $methodName = '';
+
+    public function _remap(string $method, string ...$params): mixed
+    {
+        if (count($params) < 2) {
+            throw PageNotFoundException::forPageNotFound();
+        }
+
+        $this->analyticsModel = model('Analytics' . $params[1] . 'Model');
+        $this->methodName = 'getData' . (count($params) >= 3 ? $params[2] : '');
+
+        return $this->{$method}(
+            (int) $params[0],
+            count($params) >= 4 ? (int) $params[3] : null,
+        );
+    }
+
+    public function getData(int $podcastId, ?int $episodeId = null): ResponseInterface
+    {
+        $methodName = $this->methodName;
+
+        if ($episodeId === null) {
+            return $this->response->setJSON($this->analyticsModel->{$methodName}($podcastId));
+        }
+
+        return $this->response->setJSON($this->analyticsModel->{$methodName}($podcastId, $episodeId));
+    }
+}