Using the Grid layout type for theme creators

[bph]

Discussed in #94

^{Originally posted by justintadlock April 4, 2023}
Gutenberg 15.5 is introducing a new Grid layout type: WordPress/gutenberg#49018

Currently, it's usable as an experimental Group block feature: WordPress/gutenberg#49359

Once this is out of the experimental state, this will be a major layout feature for theme authors, and they'll need to know how to build with it. This is still early in development, so it'll be a while before it's ready for any sort of docs/tutorials. But, I wanted to go ahead and note it for a future post.

I'm super excited about this because I've just been wanting to build something like this layout for two years now with proper layout support instead of hacking Columns to make it happen:

[justintadlock]

Because the Grid variation has never landed in core for the Group block, I wanted to tackle this from a different angle.

First, technically, grid support is available to any block (or variation) that opts into it. So, the primary purpose of the post will be showing developers how to enable it in a forward-compatible way for the Group. Basically, creating their own Grid variation.

But this post could also potentially how block developers can enable it for their own blocks.

[justintadlock]

I will draft this here: https://docs.google.com/document/d/1IBogXvaZygADpiTfJ3sMhaWsG74434j42CEOGTZYHFQ/edit?usp=sharing

[justintadlock]

This one is ready for its first review: https://docs.google.com/document/d/1IBogXvaZygADpiTfJ3sMhaWsG74434j42CEOGTZYHFQ/edit?usp=sharing

[justintadlock]

Thanks to @ndiego for the first pass on this.

[rmartinezduque]

@justintadlock, I left a couple of very minor suggestions. Otherwise, the post looks great to me. At first, I had questions about using upper or lower case in "grid," but I see that it follows a consistency when it has been capitalized.