Add kitchen sink parse/encode unit test

This also includes the fixes to make it work. Golden tests have been
removed.

tests/data/kitchen-sink.min.graphql

@@ -0,0 +1 @@
+query queryName($foo:ComplexType,$site:Site=MOBILE){whoever123is:node(id:[123,456]){id,... on User@defer{field2{id,alias:field1(first:10,after:$foo)@include(if:$foo){id,...frag}}}}}mutation likeStory{like(story:123)@defer{story{id}}}fragment frag on Friend{foo(size:$size,bar:$b,obj:{key:"value"})}