Enable Endpoints 2.0 (#2074)

* wip

* Fix region decorator

* Update S3 tests to succeed

* Create 'endpoint_url' setters

* Fix SDK adhoc tests

* Fix endpoint tests

* Fix protocol test generator to have a stub endpoint resolver

* Fix some more tests

* Fix aws rust runtime tests

* Update generator to appease clippy

* CR feedback

* Fix compilation

* Fix tests

* Fix doc links

* Fix SDK integration tests

* Update changelog

* Fix s3 control by adding transformer

* Throw a specific exception if the service doesn't have ep rules

* Add codecatalyst to the list of custom services