Add TimmBackbone model (#22619)

* Add test_backbone for convnext

* Add TimmBackbone model

* Add check for backbone type

* Tidying up - config checks

* Update convnextv2

* Tidy up

* Fix indices & clearer comment

* Exceptions for config checks

* Correclty update config for tests

* Safer imports

* Safer safer imports

* Fix where decorators go

* Update import logic and backbone tests

* More import fixes

* Fixup

* Only import all_models if torch available

* Fix kwarg updates in from_pretrained & main rebase

* Tidy up

* Add tests for AutoBackbone

* Tidy up

* Fix import error

* Fix up

* Install nattan in doc_test_job

* Revert back to setting self._out_xxx directly

* Bug fix - out_indices mapping from out_features

* Fix tests

* Dont accept output_loading_info for Timm models

* Set out_xxx and don't remap

* Use smaller checkpoint for test

* Don't remap timm indices - check out_indices based on stage names

* Skip test as it's n/a

* Apply suggestions from code review

Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* Cleaner imports / spelling is hard

---------

Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

.circleci/create_circleci_config.py

@@ -128,7 +128,7 @@ class CircleCIJob:
         if self.command_timeout:
             test_command = f"timeout {self.command_timeout} "
         test_command += f"python -m pytest -n {self.pytest_num_workers} " + " ".join(pytest_flags)
-        
+
         if self.parallelism == 1:
             if self.tests_to_run is None:
                 test_command += " << pipeline.parameters.tests_to_run >>"
@@ -456,6 +456,7 @@ doc_test_job = CircleCIJob(
         "pip install -e .[dev]",
         "pip install git+https://github.com/huggingface/accelerate",
         "pip install --upgrade pytest pytest-sugar",
+        "pip install natten",
         "find -name __pycache__ -delete",
         "find . -name \*.pyc -delete",
         # Add an empty file to keep the test step running correctly even no file is selected to be tested.