Hints:

• Install this shortcodes collection
• Your template should use markdownify
  (something like <h2>{{ .Params.title | markdownify }}</h2>)
• Your front matter can then include icons:

---
title: "This is a title svg {{< ico moon >}} icons"
date: 2023-07-25T08:12:30+10:00
---

More info in this blog post