Blog main list page: new format

We need to have some more elements inside the blog posts page that shows the list of the blog posts. A solution could be to have this setup in the page and add the elements that we want to add on the sidebar: https://saaspik.pixelsigns.art/saaspik/blog.html The sidebar would be nice to have the following:

• search functionality
• register to the newsletter
• tags (some of them?)
• embedded posts from our Mastodon account?
• other (open to ideas)