* ILM public side changes to support frozen phase

This is a very faithful duplication of the cold phase. We are
also excluding the snapshot action as well as the unfollow action
as these are features that require higher than basic license
privilege.

* added "frozen" to the server side schema

* add frozen phases component

* fix i18n and update jest tests

* Slight restructuring to phase types and fix copy paste issues.

- also fixed TS error introduced after TS v4 upgrade (delete)

* fix hot phase type and remove type constraint from error messages

* update validation logic

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>