[V4] Add all needed props

[rvsia]

• initialValues @rvsia feat(state): add initialValues #702
• debug @rvsia [V4] Add all needed props #690
• subscription [manager] Create a subscription API #693
• mutators (?)
  • do we need them? we can actually implement field array right into the library
• validate @Hyperkid123 [manager] Add validation support #687
• validateOnBlur (?)
• keepDirtyOnReinitialize @rvsia feat(manager): initialize + keepDirtyOnReinitialize #720
• decorators (?)
• form (?)

⛔ component - no need for it, we are not exposing it to users

• initialValuesEqual (?)

[Hyperkid123]

@rvsia I would add field array support directly. There is one decorator that handles focus on the first error field though. We may have to implement that as well.

[Hyperkid123]

component - no need for it, we are not exposing it to users

We will eventually expose this, but we only have to keep the currently exposed API. I think we will stick with the children way of creating the UI.