How to create frontmatter when using .tex file?

[guandeh17]

In normal .md file, we could specify the frontmatter

---
title: Writing in MyST Markdown
short_title: Typography
subtitle: Use MyST Markdown to author rich narrative and integrate computation.
subject: Quickstart
---

However, I cannot fully implement this when writing a .tex file. All I know is that \title[<short_title>]{<title>} can be achieved. But how to add the frontmatter for subtitle and subject with a tex file is unclear to me...