Add return types, round 1

Author: nicolas-grekas

Tests/Loader/GlobFileLoaderTest.php

@@ -38,7 +38,7 @@ public function testLoadAddsTheGlobResourceToTheContainer()
 
 class GlobFileLoaderWithoutImport extends GlobFileLoader
 {
-    public function import(mixed $resource, string $type = null, bool $ignoreErrors = false, string $sourceResource = null, $exclude = null)
+    public function import(mixed $resource, string $type = null, bool $ignoreErrors = false, string $sourceResource = null, $exclude = null): mixed
     {
         return new RouteCollection();
     }

Tests/Loader/ObjectLoaderTest.php

@@ -103,7 +103,7 @@ public function supports(mixed $resource, string $type = null): bool
         return 'service';
     }
 
-    protected function getObject(string $id)
+    protected function getObject(string $id): object
     {
         return $this->loaderMap[$id] ?? null;
     }