ci(sdk): Autogenerate changelog on build (#43364)

* Auto tag embedding team for PR review + dry run npm publish

* Install changelog generation package

* Add the initial changelog

* feat(sdk): This is an empty commit. For testing purposes.

* Update SDk build script to include changelog

* Check if a tag exists

* Ensure changelog is in the released package

* Fix workflow

* Remove unnecessary step

* Ensure we can have access to release utils script when checking out master

* Fix the step to create a PR updating readme and changelog

* Fix changelog generation

* Fix couldn't download changelog

* Clean up steps