Explore folding all ID patterns in to recursive collectable/collection IDs

[rsek]

This will have a few effects:

• reduce the number of basic ID patterns -- everything that isn't a rules package will be (what's currently called) RecursiveCollectableId or RecursiveCollectionId
• opens up recursion in collections that previously didn't have the option, like assets and moves
• opens up (recursive) collections in types that previously didn't have the option, like setting truths

This does mean that some types will require a "wrapper" folder around them, as Datasworn doesn't allow collectables to live in the "type root" (e.g. starforged.moves) -- only collections can be placed there.

[rsek]

NonRecursive(Collection|Collectable)Id and Recursive(Collection|Collectable)Id have been folded in to CollectionId and CollectableId; all collections can now recurse.

NonCollectableId is still it's own type. Still considering what to do with them, so I'll leave them be for v0.1.0.

[rsek]

above changes merged for v0.1.0; reopen issue if NonCollectableId changes warrant revisiting