Integration into @rollup/plugin-image

[shellscape]

Hey there. I'm currently leading the effort to migrate all of the "official" Rollup plugins into a monorepo at https://github.com/rollup/plugins. rollup-plugin-image is next on my list, and part of the migration is going to be adding some missing features that have long been requested. I was to curios to know if you're interested in integrating this plugin into the @rollup/plugin-image plugin. Cheers.

[bspaulding]

@shellscape sorry I'm late on this, but that sounds fine to me!