Add thumbnailUrl to other supported Asset types

Author: henser

src/Api.ts

@@ -138,6 +138,7 @@ fragment onImage on Image {
   downloadUrl(permanent: $permanent)
   previewUrl
   dynamicPreviewUrl
+  thumbnailUrl
   width
   height
   focalPoint
@@ -151,6 +152,7 @@ fragment onFile on File {
   downloadUrl(permanent: $permanent)
   icon: previewUrl
   dynamicPreviewUrl
+  thumbnailUrl
 }
 
 fragment onDocument on Document {
@@ -162,6 +164,7 @@ fragment onDocument on Document {
   downloadUrl(permanent: $permanent)
   previewUrl
   dynamicPreviewUrl
+  thumbnailUrl
   focalPoint
 }
 
@@ -173,6 +176,7 @@ fragment onAudio on Audio {
   downloadUrl(permanent: $permanent)
   previewUrl
   dynamicPreviewUrl
+  thumbnailUrl
 }
 
 fragment onVideo on Video {