This PR is like customizing image-name with templates. And add new templates {imageNumber}.
What I want to do is rename images to {gid}_{imageNumber}.{originalFileExtension} e.g. 2543952001.jpg
but `{gid}{imageNumber}_{originalFileName}` is fine (2543952_001_01_theme.jpg).
This PR is like customizing image-name with templates. And add new templates
{imageNumber}.What I want to do is rename images to
{gid}_{imageNumber}.{originalFileExtension}e.g. 2543952001.jpg but `{gid}{imageNumber}_{originalFileName}` is fine (2543952_001_01_theme.jpg).