crowdin.yaml: Add WallpaperCropper

* This comes from AOSP but contains no translations

Change-Id: Ia874c9ebda39726ed739c00bfa2113e4ffb22d18
diff --git a/crowdin.yaml b/crowdin.yaml
index 202d8a7..6c259ed 100644
--- a/crowdin.yaml
+++ b/crowdin.yaml
@@ -149,6 +149,12 @@
 
 # Other projects
 
+  # WallpaperCropper
+  -
+    source:      '/frameworks/base/packages/WallpaperCropper/res/values/strings.xml'
+    translation: '/%original_path%-%android_code%/%original_file_name%'
+    languages_mapping: *anchor
+
   # Apollo
   -
     source:      '/packages/apps/Apollo/res/values/strings.xml'