Move docs to luacs-docs/{lua,cs,landing-page}

luacs-docs/cs also has a proper http server for testing locally

luacs-docs/lua/scripts/build.ps1

@@ -0,0 +1,19 @@
+Import-Module $PSScriptRoot/../../scripts/location.ps1
+
+try {
+  Change-Location $PSScriptRoot/..
+
+  Remove-Item -Force -Recurse ./build | Out-Null
+  New-Item -ItemType Directory ./build | Out-Null
+  Copy-Item -Path ./css/. -Destination ./build -Recurse -Force | Out-Null
+  Copy-Item -Path ./js/. -Destination ./build -Recurse -Force | Out-Null
+
+  if ((Get-Command "lua_modules/bin/ldoc" -ErrorAction SilentlyContinue) -eq $null) {
+    echo "ldoc not found; please run docs/scripts/install.ps1"
+    exit 1
+  }
+
+  lua_modules/bin/ldoc .
+} finally {
+  Restore-Location
+}