Addressing PR #56 comments

[marcusoftnet]

First - THANKS for RazorSlices. It's a perfect fit for HTMX and I was so happy when I found it. Hope it will gain great traction!

Secondly - I saw the great work that @jamesfoster had started in #56. Since it was some time since the comments was addressed I tried to help out by addressing them here.

In the end the changes was not that big, but I moved around some files so it looks a bit different.

Main changes are:

• Broken out to a separate HtmxTodoRoutes.cs class
• POST, PUT and DELETE doesn't return the complete table, but individual items, which feel more inline with HTMX (ah, well REST maybe) philosophy.
• Added a simple test for the root route of htmx-todo

I have two failing tests locally, but its nothing I have touched and presumed it was due to my setup (VS Code on Linux).

I was some time since I wrote .NET on this level so please let me know if there's anything I can improve.

[marcusoftnet]

Oh, there's an issue for this too . Just mentioning it here #47