* FEATURE: Add `freeze_original` option to `PostMover`
This option will allow the api user to specify if the original topic should be `frozen`(locked and posts not deleted neither moved)
With this option when moving topic posts your posts will be `copied` to the new topic and the original topic will be kept there.
* DEV: update tests to check raw instead of ids
* DEV: Implement `freeze_original` option for `PostMover`
update specs to use `*array` matcher
* DEV: add tests to `MovedPost` model in post mover
* DEV: Update `MovedPost` model rspec
* DEV: add back empty line to `post_mover.rb`
* FIX: Solve flaky tests in `PostMover`