feature: EDU Multimedia and Gallery templates

[stephiescastle]

Checklist

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Description

Addresses all of the following:

• https://github.com/nasa-jpl/www/issues/191
• https://github.com/nasa-jpl/www/issues/378
• https://github.com/nasa-jpl/www/issues/445
• https://github.com/nasa-jpl/www/issues/444
• https://github.com/nasa-jpl/www/issues/443
• https://github.com/nasa-jpl/www/issues/442
• https://github.com/nasa-jpl/www/issues/441

All multimedia share the same main template, PageEduMultimediaDetail except for Galleries. Galleries have a dedicated template: PageEduGalleryDetail.

Instructions to test

1. make vue-storybook
2. view stories under and PageEduMultimediaDetail and PageEduGalleryDetail

Tested in the following environments/browsers:

Operating System

• macOS
• iOS
• iPadOS
• Windows

Browser

• Chrome
• Firefox ESR
• Firefox
• Safari
• Edge