Add the Friends+CORS blueprint

[akirk]

Feed Reader with the Friends Plugin

By using the Friends plugin and a CORS proxy, you can read feeds from the web in Playground, and even via ActivityPub.

Links added to the GALLERY.md file, here updated with the current branch:
• Open in Playground
• View source
• Edit

[github-actions]

Test using WordPress Playground

The changes in this pull request can previewed and tested using a WordPress Playground instance.

WordPress Playground is an experimental project that creates a full WordPress instance entirely within the browser.

Some things to be aware of

• The Plugin and Theme Directories cannot be accessed within Playground.
• All changes will be lost when closing a tab with a Playground instance.
• All changes will be lost when refreshing the page.
• A fresh instance is created each time the link below is clicked.
• Every time this pull request is updated, a new ZIP file containing all changes is created. If changes are not reflected in the Playground instance,
  it's possible that the most recent build failed, or has not completed. Check the list of workflow runs to be sure.

For more details about these limitations and more, check out the Limitations page in the WordPress Playground documentation.

Test this pull request with WordPress Playground.

[adamziel]

Lovely @akirk, thank you so much! It looks and works great. Would you just add some metadata to tell the gallery users how cool this is?

[akirk]

Oh, I didn't realize I had to add that meta too. Done!

[adamziel]

Thank you so much for contributing this fantastic Blueprint @akirk 🎉