Replace jest with vitest

[cloudycotton]

The template uses vite for most of the task so it would simplify toolchain to use vitest which uses the same configuration as vite. It is much faster and less prone to memory leaks as well.

I'm doing it in my project: https://github.com/cloudycotton/mimic/commit/eb605d659bede2801a6e34b28ac00463ef124b37

I would be happy to open a PR for this.

[LuanRoger]

Hey, thanks for the suggestion and the reference.

I'm surely will implement that

[LuanRoger]

Done in #163