Retry image download

Some images may be too large for the IIIF server when requesting full size. This MR implements a fallback to the maximum size allowed in case the download failed.

requirements.txt

@@ -2,6 +2,7 @@ albumentations==1.3.1
 arkindex-export==0.1.7
 boto3==1.26.124
 editdistance==0.6.2
+flashlight-text==0.0.4
 imageio==2.26.1
 imagesize==1.4.1
 mdutils==1.6.0