[CORE][ActivityStreamsTwo][ActivityPub] Set all routes

Allow global routes to act for every actor
Fix Favoured stream query

src/Controller/Subscribers.php

@@ -0,0 +1,69 @@
+<?php
+
+// {{{ License
+
+// This file is part of GNU social - https://www.gnu.org/software/social
+//
+// GNU social is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// GNU social is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with GNU social.  If not, see <http://www.gnu.org/licenses/>.
+
+// }}}
+
+namespace App\Controller;
+
+use App\Core\Controller;
+use App\Core\DB\DB;
+use function App\Core\I18n\_m;
+use App\Util\Exception\ClientException;
+use Symfony\Component\HttpFoundation\Request;
+
+class Subscribers extends Controller
+{
+    /**
+     * Generic function that handles getting a representation for an actor from id
+     */
+    private function GSActorById(int $id, callable $handle)
+    {
+        $gsactor = DB::findOneBy('gsactor', ['id' => $id]);
+        if (empty($gsactor)) {
+            throw new ClientException(_m('No such actor.'), 404);
+        } else {
+            return $handle($gsactor);
+        }
+    }
+    /**
+     * Generic function that handles getting a representation for an actor from nickname
+     */
+    private function GSActorByNickname(string $nickname, callable $handle)
+    {
+        $user    = DB::findOneBy('local_user', ['nickname' => $nickname]);
+        $gsactor = DB::findOneBy('gsactor', ['id' => $user->getId()]);
+        if (empty($gsactor)) {
+            throw new ClientException(_m('No such actor.'), 404);
+        } else {
+            return $handle($gsactor);
+        }
+    }
+
+    /**
+     * Collection of an actor's subscribers
+     */
+    public function GSActorShowId(Request $request, int $id)
+    {
+        return $this->GSActorById($id, fn ($gsactor) => ['_template' => 'subscribers/view.html.twig', 'gsactor' => $gsactor]);
+    }
+    public function GSActorShowNickname(Request $request, string $nickname)
+    {
+        return $this->GSActorByNickname($nickname, fn ($gsactor) => ['_template' => 'subscribers/view.html.twig', 'gsactor' => $gsactor]);
+    }
+}