Updates MyLittleContentEngine to 0.0.2

[phil-scott-78]

This does 3 pretty big things, hopefully combined which will effectively change nothing for users

• The big change is that when there is a path like /cli/first-post.md I'm now writing to /cli/first-post/index.html instead of /cli/first-post.html. This is how a lot of other static generators work for SEO and ease of file extension handling, so if the time ever comes to use a different engine the transition can be very smooth. I am writing redirects so that if someone has /cli/first-post bookmarked or linked to it'll get them to the right spot. Makes testing locally easier too with dotnet serve
• Adds cache busting at dev time for CSS. Maybe that fixes the issue with stale CSS? I have another idea up my sleeve if not.
• Adds the Razor Island SPA, makes the site a bit more peppy and easier to navigate with the long TOC on the left.

With those four changes I would recommend pulling it down and running locally before a merge. Should be fine