* Update server-proxy

* Add cloud storage implementation && update enums

* Add api && fix server-proxy

* Add fixes

* small update

* Move from ui_support_cloud_storage

* Remove temporary credentials && fix typos

* Remove trailing spaces

* Apply lost changes

* manifest_set -> manifests

* [cvat-core] Add status && updated getpreview for getting the desired error message from the server

* Remove excess code

* Fix missing

* Add tests

* move from cycle

* Update CHANGELOG

* Increase version