chore(kb): promote placeholders to todo articles

knowledge base/mas.md

@@ -0,0 +1,50 @@
+# Mas
+
+TODO
+
+1. [TL;DR](#tldr)
+1. [Further readings](#further-readings)
+
+## TL;DR
+
+<details>
+  <summary>Installation and configuration</summary>
+
+```sh
+brew install 'mas'
+sudo port install 'mas'
+```
+
+</details>
+
+<!-- Uncomment if used
+<details>
+  <summary>Usage</summary>
+</details>
+-->
+
+<!-- Uncomment if used
+<details>
+  <summary>Real world use cases</summary>
+</details>
+-->
+
+## Further readings
+
+- [Github]
+- [Homebrew]
+
+<!--
+  Reference
+  ═╬═Time══
+  -->
+
+<!-- In-article sections -->
+<!-- Knowledge base -->
+[homebrew]: homebrew.md
+
+<!-- Files -->
+<!-- Upstream -->
+[github]: https://github.com/mas-cli/mas
+
+<!-- Others -->