Idea: grab screenshots and add as links in PO comments

[yoavf]

Automatically extract all images from the first (or all?) messages of a PR, and add them as links in comments for all strings added in that pr.

Challenge: how to make sure the comments stay after the merge (bcs it's relatively easy to do that on actual gp-localci-client runs).

Possible implementation: actually modify the code to add the comments.

Notes

• We could decide to only add the source PR in the comment, and let GH/Linguine do the image fetching.
• Once implemented, we can show the screenshots in https://github.com/Automattic/gp-translation-helpers/

[mhsdef]

What's the intended audience? WL translators?

If so, two thoughts spring to mind:

1. We should be sure we only do this on public repos.
2. The context field in Linguine was always intended for this. Saving clients (as they know their own environment best) were suppose to devise something relevant and save into there.