feat: polyfill amp-access script

[adekbadek]

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:

Closes #193
Closes #880
Closes #749
Closes #170
Closes #569

How to test the changes in this Pull Request:

1. Set up a site with a few prompts
2. Test without AMP
3. Observe the appropriate prompts hidden and displayed, according to the segmentation and view logic
4. Observe that the AMP runtime JS files are not loaded
5. Observe that Conflict with wpDiscuz #880, Conflict with Liveblog plugin #749, Campaigns + Jetpack Slideshow + No AMP = No slideshow in Chrome #170, and Campaigns + no AMP cause Web Stories block not to work #569 are not reproducible anymore

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?

[dkoo]

This has been a long time coming and the changeset is much smaller than I would have expected. Very nicely done!

[matticbot]

🎉 This PR is included in version 2.6.0-alpha.1 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀

[matticbot]

🎉 This PR is included in version 2.6.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀