GitLab

* Init Flax implementation for Blenderbot

* Add a majority of stuff except for tests

* make style quality

* Add tests and fix some bugs

* Add tests

* Clean source code and fix some bugs

* Fix copies and docs

* Fix jax device condition for tests

* Fix layer norm in the encoder

* Fix a few typos in the test file

* make fix-copies

* make fix-copies

* fix layer norm

* Fix Flax params dtype (#13090)

* Fix PR reference (#13098)

* make fix-copies

* Update tests/test_modeling_flax_blenderbot.py
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>
Co-authored-by: Suraj Patil <surajp815@gmail.com>

* Copy BART to MBart and rename some stuff

* Add copy statements pointing to FlaxBart

* Update/add some common files

* Update shift_tokens_rigth + fix imports

* Fix shift_tokens_right method according to MBart implementation

* Update shift_tokens_right in tests accordingly

* Fix the import issue and update docs file
* make style quality

* Do some minor changes according to patil-suraj suggestions

* Change the order of normalization layer and attention

* Add some copu statementes

* Update generate method and add integration test for mBart

* Make a few updates after a review

Besides, add `lang_code_to_id` to MBartTokenizeFast

* fix-copies; make style quality

* Apply suggestions from code review

* Apply suggestions from code review

* Apply suggestions from code review

* fix output type, style

* add copied from

* resolve conflicts
Co-authored-by: Suraj Patil <surajp815@gmail.com>