Add mechanism to convert media queries into "element" queries

[jorgefilipecosta]

This PR adds a run time mechanism that converts simple media queries e.g: max/min-width/height into element queries that reference the dimensions of .editor-styles-wrapper-container.

We are using https://github.com/marcj/css-element-queries as our element queries "polyfill".

There are some visual regressions in the customizer it happens because although the media queries evaluate as if the viewport was small our components (if/With)ViewportMatches still think the viewport is large.
I will create a separate PR that allows us to simulate widths in these components.

How has this been tested?

I verified things work as before and there are no visual regressions excluding in the customizer.
I added a rule that changes editor-styles-wrapper width to 550px:

.editor-styles-wrapper {
width: 550px;
}

In the editor styles.
I added media & text block, I enabled stack on mobile option and I verified the media & text got stacked even though the window continues to have a big size.

[mapk]

I am so excited about this! Element queries, yay! 🎉

[jorgefilipecosta]

Given the problems we faced with transforming media queries in element queries namely: performance issues and CSS specificity changes, this PR is closed in favor of #17946.