Display tags in task list view

app/Formatter/TaskListFormatter.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Kanboard\Formatter;
+
+use Kanboard\Core\Filter\FormatterInterface;
+
+/**
+ * Class TaskListFormatter
+ *
+ * @package Kanboard\Formatter
+ * @author  Frederic Guillot
+ */
+class TaskListFormatter extends BaseFormatter implements FormatterInterface
+{
+    /**
+     * Apply formatter
+     *
+     * @access public
+     * @return mixed
+     */
+    public function format()
+    {
+        $tasks = $this->query->findAll();
+        $taskIds = array_column($tasks, 'id');
+        $tags = $this->taskTagModel->getTagsByTasks($taskIds);
+        array_merge_relation($tasks, $tags, 'tags', 'id');
+
+        return $tasks;
+    }
+}