🤔 Grids improvements

[jefftriplett]

Semi-related to #1135

I have been spending a lot of time researching Django shopping carts, and I have been struggling with our Ecommerce

This highlights a greater issue: the sort order needs to scale better for this and probably other categories.

Random observations:

• everything is sorted by "# of stars"
• "Last updated" showed the last time the project was updated on GitHub
• We aren't factoring in pypi's update date here.
• "Python 3?" is meaningless
• Saleor's last pypi release date: ~4 years ago - 2020/07 (1st in the list
• django-oscar last pypi release date: ~2 months ago - 2024/02 (2nd in the list)
• Saleor has zero reviews.
• We also have projects like Plata that were upated within recent weeks but haven't seen a pypi release in ~12 years: https://djangopackages.org/packages/p/plata/

We should put a heavier weight on projects with a PyPI release than projects that don't for these types of libraries. Maybe we can use the Category to determine some weights for sort order.

We could also emphasize the "View all grid packages" a little more which is where more of these should go: https://djangopackages.org/grids/g/ecommerce/packages/