This is following the instructions at [this article][1]. I removed
vue-intersect because it wasn't compatible with vue3 - I may go back and
figure something out.

[1]: https://vueschool.io/articles/vuejs-tutorials/how-to-migrate-from-vue-cli-to-vite/

There is still a Proxy client side that I think is causing problems

I couldn't figure out how to get vue to work with the async dynamic
import so I created the index file instead. There is a problem with the
Transitions component which I will try to fix next

This just leverages the vite dev server to be very similar to the `dev`
npm script. I used `yarn link` to test it with another local package and
found that I needed to use some absolute paths to ensure that the right
config got used. Next will be a similar treatment for the export
command.

I think we'll need to publish the src because vite is going to build it
for the cli commands.