client/image_list: Wrap options and result

Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Signed-off-by: Austin Vazquez <austin.vazquez@docker.com>

client/image_list_opts.go

@@ -1,5 +1,7 @@
 package client
 
+import "github.com/moby/moby/api/types/image"
+
 // ImageListOptions holds parameters to list images with.
 type ImageListOptions struct {
 	// All controls whether all images in the graph are filtered, or just
@@ -15,3 +17,8 @@ type ImageListOptions struct {
 	// Manifests indicates whether the image manifests should be returned.
 	Manifests bool
 }
+
+// ImageListResult holds the result from ImageList.
+type ImageListResult struct {
+	Items []image.Summary
+}