docs: Re-integrate

docs/layouts/shortcodes/directoryindex.html

@@ -1,13 +0,0 @@
-{{- $pathURL := .Get "pathURL" -}}
-{{- $path := .Get "path" -}}
-{{- $files := readDir $path -}}
-<table>
-    <th>Size in bytes</th>
-    <th>Name</th>
-{{- range $files }}
-    <tr>
-        <td>{{ .Size }}</td>
-        <td><a href="{{ $pathURL }}{{ .Name | relURL }}" target="_blank"> {{ .Name }}</a></td>
-    </tr>
-{{- end }}
-</table>