Allow to customize statistic queries (#5827)

* use TimesheetStatisticsQUery for all repository calls
* send event to customize statistics query

tests/Event/TimesheetStatisticsQueryEventTest.php

@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Tests\Event;
+
+use App\Event\TimesheetStatisticsQueryEvent;
+use Doctrine\ORM\EntityManager;
+use Doctrine\ORM\QueryBuilder;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(TimesheetStatisticsQueryEvent::class)]
+class TimesheetStatisticsQueryEventTest extends TestCase
+{
+    public function testGetter(): void
+    {
+        $qb = new QueryBuilder($this->createMock(EntityManager::class));
+        self::assertCount(0, $qb->getParameters());
+        $sut = new TimesheetStatisticsQueryEvent($qb);
+        $qb->setParameter('foo', 'bar');
+
+        self::assertSame($qb, $sut->getQueryBuilder());
+        self::assertCount(1, $sut->getQueryBuilder()->getParameters());
+    }
+}