feat: add corrections archive template

[leogermani]

All Submissions:

• Have you followed the Newspack Contributing guideline?
• Does your code follow the WordPress' coding standards and VIP Go coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

NOTE: this adds support to a feature that is still under development and behind a feature flag. It's ok that this doesn't look good yet. All we want is to be able to QA migrated data.

How to test the changes in this Pull Request:

1. Checkout fix: update corrections post type slug newspack-plugin#3702
2. See feat(corrections): add corrections and clarifications behind feature flag newspack-plugin#3638 for instructions on how to add the feature flag and add corrections
3. Edit a couple of posts and add corrections using the new metabox
   4.Visit yoursite.com/corrections and confirm you see an archive for all corrections, displaying the correction date, the correction content and the title linked to the post associated with that correction

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully ran tests with your changes locally?

[laurelfulford]

This works as expected overall: when I add corrections to a post, they show up on the /corrections page linked the correct posts, with the correct dates.

The only issue I spotted is when I add more than one correction to a post, one of them is duplicated -- the formatting is a little different, so I'm not sure this is intentional (like it may be to show the latest correction larger first, and then list them all underneath?).

Front end:

Post editor:

I'm marking as 'request changes', but if this is correct let me know!

[chickenn00dle]

~~Looks good 👍 ~~

Oops. Seeing @laurelfulford review as I did this. I'll remove my approval in favor of her feedback!

Another review was done as I approved.

[github-actions]

Hey @leogermani, good job getting this PR merged! 🎉

Now, the needs-changelog label has been added to it.

Please check if this PR needs to be included in the "Upcoming Changes" and "Release Notes" doc. If it doesn't, simply remove the label.

If it does, please add an entry to our shared document, with screenshots and testing instructions if applicable, then remove the label.

Thank you! ❤️

[matticbot]

🎉 This PR is included in version 2.5.0-alpha.1 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀

[matticbot]

🎉 This PR is included in version 2.5.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀