Style blog/news teaser as cards

Going to add a new view mode to these (possibly all) content types for the Card display, so need to update a few Recipes. Otherwise the styling is done, I'll push a draft MR anyway as I won't get the config/Recipe updates done today.

I tested this locally, it looks great! There's an issue with the templates not being detected properly but I tested by copying everything over into the core Olivero theme.

The only thing that wasn't working as expected was the three-column view, but I'm not sure whether this is because of the other wonkiness (but the one-column works!).

I also removed the username from the display for now, because that's a whole can of worms that I don't think we have time to properly deal with, for one thing since it links to the profile page which we're not set up for (not to mention the default username 'admin' is.... suboptimal for display purposes). We may want to add a separate author field later on to get around this, just depends how we ultimately hand this.

I think we have to update the machine name of one field, but otherwise this code looks good to me and I would consider it merge-ready.

Manually tested by coping the entire subtheme into the contrib folder, and the three-column layout works as expected. Also fixed the field machine name, so RTBC if green.

Glad we're gonna ship looking sharp. :) Merged into 1.x, thanks!

This is great but for those wondering why they don't see this improvement yet: 🐛 Add symlink for Drupal CMS Olivero Active

pameeela → changed the visibility of the branch pameeela-738525dc-patch-a1f4 to hidden.