[Poll] Fixed ShowPoll route, moved Poll Entity, created NewPollForm

Entity was temporarily moved to src/Entity in order to load from DB, since it is yet no possible to do that from Plugin

plugins/PollPlugin/Forms/NewPollForm.php

@@ -0,0 +1,45 @@
+<?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 Plugin\PollPlugin\Forms;
+
+use App\Core\Form;
+use function App\Core\I18n\_m;
+use Symfony\Component\Form\Extension\Core\Type\SubmitType;
+use Symfony\Component\Form\Extension\Core\Type\TextType;
+use Symfony\Component\Form\Form as SymfForm;
+
+const MAX_OPT = 5;
+class NewPollForm extends Form
+{
+    public static function make(int $optionNum): SymfForm
+    {
+        $optionNum = min(MAX_OPT,$optionNum);
+        $options   = [];
+        for ($i = 1; $i <= $optionNum; ++$i) {
+            //['Option_i',   TextType::class,   ['label' => _m('Option i')]],
+            array_push($options,['Option_' . $i, TextType::class, ['label' => _m(('Option ' . $i))]]);
+        }
+        array_push($options, ['save', SubmitType::class, ['label' => _m('Submit Poll')]]);
+
+        return parent::create($options);
+    }
+}