Process Existing Images with Computer Vision

[ryanwelcher]

Description of the Change

This PR introduces two features:

1. The ability to process an image from the associated attachment page.
2. The ability to process any image via the Media Modal.

Benefits

These features will allow users to process existing images via the admin.

Checklist:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• All new and existing tests passed.

Applicable Issues

#75

[ryanwelcher]

Meta box added that is tied into the post save. There are opt-in and are not tied to the automatic checkbox options in the settings.

Image without scanned data:

Image with scanned data:

[ryanwelcher]

@jeffpaul I've implemented the buttons and associated endpoints to allow scanning in the media modal.

Screenshot:

[dinhtungdu]

Rescan button, rescan checkbox and generate checkbox work as expected, only some minor bugs remain.

[ryanwelcher]

@dinhtungdu thanks for the review! I've addressed the issues you pointed out and just had one question for you.

[ryanwelcher]

@dinhtungdu this is ready for review. Thanks!

[ryanwelcher]

@dinhtungdu I've added a couple of changes. This is ready for review.

[dinhtungdu]

Awesome @ryanwelcher, let get this merged 🎉

[dinhtungdu]

👍

[jeffpaul]

@ryanwelcher noting there are a couple merge conflicts to resolve before we get this merged in, you able to handle those conflicts?

[ryanwelcher]

@dinhtungdu I resolved the merge conflicts and pushed. Can you review so I can merge, please?

[dinhtungdu]

🎉

[dinhtungdu]

I found a case when the API credentials are wrong or expired, the spinner will run forever without any feedback to users.

In the media detail page, check Generate caption and hit Update (with wrong/expired API credentials), no feedback about the error after saving too.

But due to our milestone, I think we can ship this PR and address the mentioned issue separately.