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/Admin/Controllers/PodcastPersonController.php

@@ -0,0 +1,83 @@
+<?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\Admin\Controllers;
+
+use App\Entities\Podcast;
+use App\Models\PersonModel;
+use App\Models\PodcastModel;
+use CodeIgniter\Exceptions\PageNotFoundException;
+use CodeIgniter\HTTP\RedirectResponse;
+
+class PodcastPersonController extends BaseController
+{
+    protected Podcast $podcast;
+
+    public function _remap(string $method, string ...$params): mixed
+    {
+        if ($params === []) {
+            throw PageNotFoundException::forPageNotFound();
+        }
+
+        if (
+            ($this->podcast = (new PodcastModel())->getPodcastById((int) $params[0])) !== null
+        ) {
+            unset($params[0]);
+            return $this->{$method}(...$params);
+        }
+
+        throw PageNotFoundException::forPageNotFound();
+    }
+
+    public function index(): string
+    {
+        helper('form');
+
+        $data = [
+            'podcast' => $this->podcast,
+            'podcastPersons' => (new PersonModel())->getPodcastPersons($this->podcast->id),
+            'personOptions' => (new PersonModel())->getPersonOptions(),
+            'taxonomyOptions' => (new PersonModel())->getTaxonomyOptions(),
+        ];
+        replace_breadcrumb_params([
+            0 => $this->podcast->title,
+        ]);
+        return view('Modules\Admin\Views\podcast\persons', $data);
+    }
+
+    public function attemptAdd(): RedirectResponse
+    {
+        $rules = [
+            'persons' => 'required',
+        ];
+
+        if (! $this->validate($rules)) {
+            return redirect()
+                ->back()
+                ->withInput()
+                ->with('errors', $this->validator->getErrors());
+        }
+
+        (new PersonModel())->addPodcastPersons(
+            $this->podcast->id,
+            $this->request->getPost('persons'),
+            $this->request->getPost('roles') ?? [],
+        );
+
+        return redirect()->back();
+    }
+
+    public function remove(string $personId): RedirectResponse
+    {
+        (new PersonModel())->removePersonFromPodcast($this->podcast->id, (int) $personId);
+
+        return redirect()->back();
+    }
+}