WebP saving

[prokoudine]

I use WebP extensively to make web pages weigh less (I consistently get smaller file sizes than with PNG and JPG). However, I have to use conversion tools just to get from Annotator to the final WebP file via a temporary PNG file. It would be lovely to have WebP saving/exporting built right in.

[phase1geo]

I'm not seeing a way to generate a webp file from within the application. Though there is a libwebp-dev library, there is no VAPI available for this (at least as far as I can find). I'm not sure that I can commit to adding this feature without an available path to make this happen.

[phase1geo]

I have added the ability to export to WebP format in the main branch. This support will be generally available in the upcoming next release.