feat: add post template

.github/POST_TEMPLATE.md

@@ -0,0 +1,53 @@
+### Post Template
+
+> [!NOTE]
+> This is a template for creating a post for the freemediaheckyeah blog, and is meant for **collaborators** only.
+
+Notes:
+
+- The title should be a short, descriptive title.
+- The date should be in the format `YYYY-MM-DD`.
+- The filename should be in the format `month-year.md`.
+- The description should be a short, descriptive description of the post.
+- Authors should be in the format `['username', ....]`
+- The ending shouldn't have a line break (`---`/`***`).
+- Links to the website should be turned into relative links, i.e. `[Text Tools](https://fmhy.net/text-tools)` -> `[Text Tools](/text-tools)`.
+
+Template:
+```
+---
+title: Monthly Updates [Month]
+description: Month 20YY updates
+date: 20YY-MM-DD
+next: false
+aside: left
+prev: false
+sidebar: false
+footer: true
+---
+
+<Post authors="['nbats']"/>
+
+:::info
+These update threads only contains major updates. If you're interested
+in seeing all minor changes you can follow our
+[Commits Page](https://github.com/fmhy/FMHYedit/commits/main) on GitHub or
+[Updates Channel](https://redd.it/17f8msf) in Discord.
+:::
+
+### Wiki Updates
+
+....
+
+---
+
+### Stars Added ⭐
+
+....
+
+---
+
+### Things Removed
+
+....
+```