feat: add cut_cross_entropy (#2091)

* feat: add cut_cross_entropy

* fix: add to input

* fix: remove from setup.py

* feat: refactor into an integration

* chore: ignore lint

* feat: add test for cce

* fix: set max_steps for liger test

* chore: Update base model following suggestion

Co-authored-by: Wing Lian <wing.lian@gmail.com>

* chore: update special_tokens following suggestion

Co-authored-by: Wing Lian <wing.lian@gmail.com>

* chore: remove with_temp_dir following comments

* fix: plugins aren't loaded

* chore: update quotes in error message

* chore: lint

* chore: lint

* feat: enable FA on test

* chore: refactor get_pytorch_version

* fix: lock cce commit version

* fix: remove subclassing UT

* fix: downcast even if not using FA and config check

* feat: add test to check different attentions

* feat: add install to CI

* chore: refactor to use parametrize for attention

* fix: pytest not detecting test

* feat: handle torch lower than 2.4

* fix args/kwargs to match docs

* use release version cut-cross-entropy==24.11.4

* fix quotes

* fix: use named params for clarity for modal builder

* fix: handle install from pip

* fix: test check only top level module install

* fix: re-add import check

* uninstall existing version if no transformers submodule in cce

* more dataset fixtures into the cache

---------

Co-authored-by: Wing Lian <wing.lian@gmail.com>
Co-authored-by: Wing Lian <wing@axolotl.ai>

src/axolotl/integrations/cut_cross_entropy/README.md

@@ -0,0 +1,10 @@
+# Cut Cross Entropy
+
+### Usage
+
+```yaml
+plugins:
+  - axolotl.integrations.cut_cross_entropy.CutCrossEntropyPlugin
+
+cut_cross_entropy: true
+```