This adds support for Undefined, Null, Boolean, BigInt, and String to AOs StructuredSerializeInternal and StructuredDeserialize.
This makes it possible to include fewer full definitions of things, which makes the file about 30% faster to compile.
This implementation only works for cloning Numbers, and does not try to do all the spec steps for structured serialize and deserialize. Co-Authored-By: Andrew Kaster <akaster@serenityos.org>