Figure out typings between deploy and lexicon

[josephjclark]

Type interfaces describing spec and state are really messy right now

• deploy/type.ts describes v1 spec and provisioner state objects
• lexicon/lightning describes provisioner state
• lexicon/portability.d.ts describes v2 spec
• Also some complication around the v2 state yaml files

What we need is:

• as few type interfaces as possible. Maybe the deploy types can just alias out the provisioner namespace?
• A user and AI guide to explain how to make changes

I'd also love a common dependency between kit and lightning, to help keep both repos honest.