* add new trait, still migration to make

* Apply suggestions from code review

Co-Authored-By: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* implement migration

* better naming

* fix test

* no longer require DeprecatedTime

* add test

* fix version

* upgrade only from kusama

* add test

* fix test

* Update frame/timestamp/src/lib.rs

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>