Create a gallery page similar to notebooks_demos index

[ocefpaf]

@MathewBiddle if I recall correctly you wanted a gallery page similar to the EDS book, right? Sorry if there is an open issue for it but I could not find it. It turns out we had that in the previous incarnation of this book and I adapted it to the jupyterbook infrastructure. Here is a screenshot of what I have so far:

What do you think?

[MathewBiddle]

That is awesome! Looks great so far.

We'll probably need to rename some of the sidebar titles. "Code Gallery" might not be the right name anymore if we add this notebooks gallery page.

Initially, I was thinking this gallery view would replace the chapter pages (eg. https://ioos.github.io/ioos_code_lab/content/code_gallery/data_access.html). A gallery for each chapter. But now, you have me thinking it could be useful to have them all in one page. How hard would it be to make chapter galleries? For example, a gallery of all the Data Access notebooks, another one for all the Data Analysis and Visualization, and then another for Data Management?

[ocefpaf]

We'll probably need to rename some of the sidebar titles. "Code Gallery" might not be the right name anymore if we add this notebooks gallery page.

Yep. But I used gallery there in a generic way. We can use a better name or multiple names if we are using this as front page for the current named sections we have.

Initially, I was thinking this gallery view would replace the chapter pages (eg. https://ioos.github.io/ioos_code_lab/content/code_gallery/data_access.html). A gallery for each chapter.

Makes sense. I only tried that as a proof of concept.

But now, you have me thinking it could be useful to have them all in one page. How hard would it be to make chapter galleries? For example, a gallery of all the Data Access notebooks, another one for all the Data Analysis and Visualization, and then another for Data Management?

Not hard. It would be a single markdown file for each.