[Feature Request] Full body content for RSS

[JeremiahSecrist]

Feature

Add an option to enable full body content into the RSS feed. Meaning that the blog post becomes embedded into the feed on its own.

Reasoning

This feature would enable readers to not have to visit my site directly every time in order to get the info they want (my blog posts in this case)

Links:

• Astro's related docs
• Example feed with said feature

Addendum

First and foremost, I would like to thank you for creating this wonderful template! I've just recently started to use it, and it has been a real joy to work with.