Pull out `States` and `ChildObjects` from Objects

[argonui]

Objects should decompose into simple readable json files while fully maintaining the ability to be re-composed into their original form.

Currently the ContainedObjects field is broken out and has a subdirectory created to contain the sub objects and preserve readability. I did not previously know that States and ChildObjects have a similar need to be broken out.

Consider if they should share the subdirectory with ContainedObjects or have their own subdirectory.

[Chr1Z93]

States are well-handled now. I don't think ChildObjects need to be split since attachments in TTS aren't super handy and semi-permanent. So these objects will stay connected and not have any scripting executed etc.