Website: Better feeds & post tags refactor

[Shrinks99]

Hey! I like this project and want to follow your blog! Unfortunately right now Zola's RSS feed plugin doesn't render the content of the post to the feed. This PR fixes that and also refactors how you add authors to posts using Zola's default authors array and description string. See Zola's front matter docs for details.

I also added a README for the website. Couldn't find this anywhere, should make it easier for other people to get started :)

Changes

• Adds a basic README.md file with instructions on how to build the site
• Adds a custom atom feed template
  • Includes the full text in the post!
• Refactors custom author front matter tag to use Zola default authors array
• Refactors custom summary front matter tag to use Zola default description string
• Improves rendering of post dates with the tag

Screenshots

Feed reader view of the live site feed

Feed reader view as of this PR running locally (Screenshot slightly out of date, it actually works better than this)

[Keavon]

Nice, thanks. I'll aim to review this in the next few days.

[Shrinks99]

Actually, it occurs to me that I'm missing a few tags that could be added to the feed. Pls don't merge just yet :)

[Shrinks99]

Alright, should be good!