Liquid files embed support

[eloyesp]

Liquid files are most of the times html files, so they can embed javascript and stylesheets (that are supported on HTML, but not on liquid files.

But it would be great to also support some liquid specific embeds:

• The schema tag embeds a JSON:

{% schema %}
{
  "name": "Article",
  "class": "article-page"
}
{% endschema %}

• The style tag embeds CSS:

{% style %}
.blog-article .article-container p {
  font-family: {{ section.settings.font_family }};
  margin: 0 auto 60px;
}
{% endstyle %}

And the other missing embed that is getting quite common, is missing also on HTML, that is the SVG tag:

<svg xmlns="http://www.w3.org/2000/svg" width="18" height="17" viewBox="0 0 18 17">
  <path fill="#000" d="M16.5 7.1l-1.4-1-1.5z"></path>
</svg>

Can I help adding support for that?