feat: Add images block for side-by-side image embeds

[arnest00]

Description

This PR creates a block for displaying two or three images side-by-side. The block is called multi-image and expects a single row with either two or three cells. Each cell includes an image and a caption. If less than two or more than three images are added, then the images stack on all screen sizes.

Motivation and Context

This will allow content creators to display up to three images in a row in stories as needed.

How Has This Been Tested?

Tested on a demo page to preview the feature: https://sbx-side-by-side-images--design-website--adobe.hlx.page/drafts/dev/images-draft

Screenshots (if appropriate):

Types of changes

• [x] New feature (non-breaking change which adds functionality)

Checklist:

• [x] I have signed the Adobe Open Source CLA.
• [x] My code follows the code style of this project.
• [x] I have read the CONTRIBUTING document.
• [x] All new and existing tests passed.

[aem-code-sync[bot]]

Page	Score	PSI Audit	Google
/drafts/images-draft

[aem-code-sync[bot]]

Page	Score	PSI Audit	Google
/drafts/images-draft

[aem-code-sync[bot]]

Page	Score	PSI Audit	Google
/drafts/images-draft

[aem-code-sync[bot]]

Page	Score	PSI Audit	Google
/drafts/images-draft

[aem-code-sync[bot]]

Page	Score	PSI Audit	Google
/drafts/dev/images-draft

[aem-code-sync[bot]]

Page	Score	PSI Audit	Google
/drafts/dev/images-draft

[aem-code-sync[bot]]

Page	Score	PSI Audit	Google
/drafts/dev/images-draft