Add: Book hero and Banner with book description patterns.

[juanfra]

Description

Adding patterns for the "Landing page: Book" page. Adding patterns for the "Hero" and "About the book" sections.

Once this one is merged with the ones from #296, we should be able to create the landing page.

Screenshots

Screen.Recording.2024-09-13.at.18.42.08.mov

Testing Instructions

1. Create a page.
2. Add the patterns.
3. Confirm they're looking like in the designs.

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

If you're merging code through a pull request on GitHub, copy and paste the following into the bottom of the merge commit message.

Co-authored-by: juanfra <juanfra@git.wordpress.org>
Co-authored-by: carolinan <poena@git.wordpress.org>
Co-authored-by: beafialho <beafialho@git.wordpress.org>

To understand the WordPress project's expectations around crediting contributors, please review the Contributor Attribution page in the Core Handbook.

[carolinan]

I just added the one line credit for the book template to the readme.

I have one small feedback, but it is not blocking: If the pre-order text is meant to be a call to action, I think it needs to be more prominent.

[beafialho]

These look great, thank you!

The pre-order text looks as intended.