docs: add faq (#379)

Author: Aevarkan

docs/getting-started/faq.md

@@ -0,0 +1,13 @@
+---
+comments: true
+---
+
+# Frequently Asked Questions
+
+???+ question "Which platforms and architectures are supported by Endstone?"
+
+    Endstone is built around the official [Bedrock Dedicated Server (BDS)](https://www.minecraft.net/download/server/bedrock), which supports Windows and Ubuntu Linux.
+
+    Accordingly, Endstone only supports Windows and Ubuntu Linux. Other platforms may or may function.
+
+    BDS only supports the `x86-64` CPU architecture. Systems with `arm` CPU architectures are not supported.

mkdocs.yml

@@ -191,6 +191,7 @@ nav:
       - Start your server: getting-started/start-your-server.md
       - Project structure: getting-started/project-structure.md
       - Contributing: getting-started/contributing.md
+      - FAQ: getting-started/faq.md
   - Tutorials:
       - Create your first plugin: tutorials/create-your-first-plugin.md
       - Install your plugin: tutorials/install-your-plugin.md