do not show filter by user on 'my tasks' page, and show different states

dynamically

src/Bundle/ChillTaskBundle/Repository/SingleTaskStateRepository.php

@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\TaskBundle\Repository;
+
+use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\Exception;
+
+class SingleTaskStateRepository
+{
+    private const FIND_ALL_STATES = <<<'SQL'
+    SELECT DISTINCT jsonb_array_elements_text(current_states) FROM chill_task.single_task
+    SQL;
+
+    public function __construct(
+        private Connection $connection
+    ) {
+    }
+
+    /**
+     * Return a list of all states associated to at least one single task in the database
+     *
+     * @return list<string>
+     * @throws Exception
+     */
+    public function findAllExistingStates(): array
+    {
+        $states = [];
+
+        foreach ($this->connection->fetchAllNumeric(self::FIND_ALL_STATES) as $row) {
+            if ('' !== $row[0] && null !== $row[0]) {
+                $states[] = $row[0];
+            }
+        }
+
+        return $states;
+    }
+
+}