[eleventy-plugin-local-respimg] Ignore optimized images that are larger than the original

[sdalmonte]

Sometimes when I run this plugin, some of the optimized images have a larger file size than the original image. Would it make sense to add an option to ignore/discard these images and fall back to the original?

I’ve seen this at >90% of the original width when generating an optimized PNG from a PNG original, and at >70% of the original width when generating a WebP from a JPEG original.