chore(namespace): rewirtten namspeace from app to GitContributionGraph.

src/Service/ContributionAggregator.php

@@ -2,9 +2,9 @@
 
 declare(strict_types=1);
 
-namespace App\Service;
+namespace GitContributionGraph\Service;
 
-use App\Service\Provider\ProviderInterface;
+use GitContributionGraph\Service\Provider\ProviderInterface;
 use Psr\Log\LoggerInterface;
 use Symfony\Component\DependencyInjection\Attribute\AutowireIterator;