resources/images: Create AutoOrient image filter

Closes #11717

docs/content/en/functions/images/AutoOrient.md

@@ -0,0 +1,52 @@
+---
+title: images.AutoOrient
+description: Returns an image filter that rotates and flips an image as needed per its EXIF orientation tag.
+categories: []
+keywords: []
+action:
+  aliases: []
+  related:
+    - functions/images/Filter
+    - methods/resource/Filter
+  returnType: images.filter
+  signatures: [images.AutoOrient]
+toc: true
+---
+
+{{< new-in 0.122.0 >}}
+
+## Usage
+
+Create the filter:
+
+```go-html-template
+{{ $filter := images.AutoOrient }}
+```
+
+{{% include "functions/images/_common/apply-image-filter.md" %}}
+
+{{% note %}}
+When using with other filters, specify `images.AutoOrient` first.
+{{% /note %}}
+
+```go-html-template
+{{ $filters := slice
+  images.AutoOrient
+  (images.Process "resize 200x")
+}}
+{{ with resources.Get "images/original.jpg" }}
+  {{ with images.Filter $filters . }}
+    <img src="{{ .RelPermalink }}" width="{{ .Width }}" height="{{ .Height }}" alt="">
+  {{ end }}
+{{ end }}
+```
+
+## Example
+
+{{< img
+  src="images/examples/landscape-exif-orientation-5.jpg"
+  alt="Zion National Park"
+  filter="AutoOrient"
+  filterArgs=""
+  example=true
+>}}