Add serve script

Author: AristurtleDev

serve.ps1

@@ -0,0 +1,8 @@
+# Exit on any error
+$ErrorActionPreference = "Stop"
+
+# Run the build script to make sure there's something to serve
+.\build.ps1
+
+# Start DocFx serve
+dotnet docfx docfx.json --serve

serve.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -e
+
+# Run the build script to make sure there's something to serve
+./build.sh
+
+# Start DocFx serve
+dotnet docfx docfx.json --serve