Look at limiting BinaryFormatter usage with CodeDomSerializationStore

The resource stream is a `HashTable` of `string` to `object`. While we support `HashTable` in `BinaryFormattedObject` related code, it's currently only for primitives and strings. We would need to look into what `object`s get added typically to fully understand this and characterize how useful the current `HashTable` support is and whether or not we could add coverage for other types to make it useful. (Say, an embedded `byte[]`.)

It is entirely possible that we may be stuck with `BinaryFormatter` for runtime design scenarios.