Merge branch 'addImageExtension' into 'master'

Add image extension

See merge request !97

src/Import/Importer.php

@@ -33,6 +33,7 @@ class Importer implements ImporterInterface
     private ?string $sampleTeiDocumentUrl;
     private ?string $teiDir = null;
     private ?string $teiSampleDir = null;
+    private const s3ImageExtension = 'jpg';
 
     public function __construct(FileService $fileService)
     {