Add normalize function

normalize.jq

@@ -0,0 +1,13 @@
+# Apply f to composite entities recursively using keys[], and to atoms
+def sorted_walk(f):
+  . as $in
+  | if type == "object" then
+      reduce keys[] as $key
+        ( {}; . + { ($key):  ($in[$key] | sorted_walk(f)) } ) | f
+  elif type == "array" then map( sorted_walk(f) ) | f
+  else f
+  end;
+
+def normalize: sorted_walk(if type == "array" then sort else . end);
+
+normalize