…ts types (elastic#75009)

## Summary

Part of the DE tech debt includes moving to use the common io-ts types in the UI. Currently, we are using some of them in some places and other times we're using the front end defined typescript types. This means that changes often have to be done on both ends, validation isn't being done at the UI boundary on request or response. Using the common types could help us avoid bugs moving forward. Obviously, there's a lot of code to touch so trying to just do it piece by piece. This PR addresses the following:

- Replaced uses of `NewRule` with common type `CreateRuleSchema` and `UpdateRuleSchema`. These were being combined a bit
- Split `usePersistRule` which was used for both `POST` and `PUT` into two hooks - `useCreateRule` and `useUpdateRule`. 
  - The logic for combining these two relied on checking for the existence of an `id` - if present it would `PUT`, otherwise it would `POST`.
  - However, `id` is not a required property for either of these, so it's not reliable
- Updated the rule edit flow to use `useUpdateRule`
- Updated the rule creation flow to use `useCreateRule`