Margarethe: Add new theme

[MaggieCabrera]

pNEWy-hXf-p2

[github-actions]

Preview changes

I've detected changes to the following themes in this PR: Margarethe.

You can preview these changes by following the links below:

• Preview changes for Margarethe

I will update this comment with the latest preview links as you push more changes to this PR.
⚠️ Note: The preview sites are created using WordPress Playground. You can add content, edit settings, and test the themes as you would on a real site, but please note that changes are not saved between sessions.

[MaggieCabrera]

This one is ready for review, it should be ready to submit to dotorg

[henriqueiamarino]

@MaggieCabrera I checked the following items, and they are all LGTM:

• Templates and elements;
• Skip links;
• Hard-coded lines (with Theme Check)
• Readme file

I found only two topics that can be problematic:

Theme Check alerted us about these three images that can be compacted:

WARNING: assets/images/margarethe-img-5-scaled.jpg is 590.1 KB in size. Large file sizes have a negative impact on website performance and loading time. Compress images before using them.
WARNING: assets/images/margarethe-img-4-scaled.jpg is 591.0 KB in size. Large file sizes have a negative impact on website performance and loading time. Compress images before using them.
WARNING: assets/images/margarethe-img-2-scaled.jpg is 767.5 KB in size. Large file sizes have a negative impact on website performance and loading time. Compress images before using them.

The Theme URI doesn't follow our standards. We have been using showcase pages on the Themeshaper site. So, this theme's page should be:
https://themeshaper.com/margarethe/

[alaczek]

This looks good to me. The only thing I flagged is the size of some of the images - I don't know what's the recommended size, but I think anything over 350-400KB needs to be compressed.

Stale

[MaggieCabrera]

I made the changes to the images and the theme URL, I'm bringing this in, thanks for the reviews!