Karax steps forward

[marcomq]

I've used jQuery Dom builder before and also used React, Svelte and Typescript 
recently. For me, Karax is more similar to jQuery Dom than it is to more 
"modern" techniques as jsx / tsx. I also miss a node integration. I couldn't 
find examples for this. Even if this might not be necessary as nim compiles 
everything, I would like to use something like babel to make the code run on 
old browsers.