Trying out moveBefore instead of insertBefore

[WebReflection]

This MR is here to simply provide a testing branch for moveBefore proposal, having a way to compare performance or results against current insertBefore implementation.

How to run tests

First of all, once forked, npm i to get dependencies, then npm run build to create the dist version, then:

npx static-handler .

Now reach http://localhost:8080/test/ and check the console

[WebReflection]

to whom it might concern, the changes in package.json are probably needed on the main branch too (to compare results) ... I might update that as well just to keep things simple (which I just did)