Start making install instructions

Author: ethanc8

source/Guides/Install/Linux.md

@@ -0,0 +1,8 @@
+# Linux
+
+Ensure you have `bash`, `curl`, and `sudo` installed and working. Then run the following command in your terminal:
+
+```bash
+/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/gnustep/tools-scripts/master/gnustep-web-install)"
+```
+

source/Guides/Install/Windows.md

@@ -0,0 +1,3 @@
+# Windows
+
+We unfortunately don't have any Windows install instructions yet. You might be able to get some useful info from [tools-windows-msvc](https://github.com/gnustep/tools-windows-msvc).

source/Guides/Install/index.md

@@ -0,0 +1,35 @@
+# Installation
+
+```{toctree}
+:maxdepth: 2
+:caption: Contents
+:titlesonly: true
+
+Linux
+Windows
+```
+
+If you are on a Unix-like system other than GNU/Linux, use the [Linux instructions](Linux.md).
+
+% Shows 1 column for width < 576px
+% Shows 2 columns for width >576px, <1200px
+% Shows 3 columns for width >1200px
+::::{grid} 1 2 2 3
+:margin: 4 4 0 0
+:gutter: 1
+
+:::{grid-item-card} {fab}`linux` Linux
+:link: Linux
+:link-type: doc
+
+:::
+
+:::{grid-item-card} {fab}`windows` Windows
+:link: Windows
+:link-type: doc
+
+:::
+
+::::
+
+

source/Guides/index.md

@@ -7,5 +7,6 @@
 
 App/index
 AppsWithCodeOnly/index
+Install/index
 ```
 

source/conf.py

@@ -65,3 +65,7 @@
 html_extra_path = ['RawHTML']
 
 myst_footnote_transition = False
+
+html_css_files = [
+    "https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.1/css/all.min.css"
+]