Make StaticCache configurable at model construct time (#32830)

* Make StaticCache configurable at model construct time

* integrations import structure

* add new doc file to toc

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Co-authored-by: Guang Yang <guangyang@fb.com>
Co-authored-by: Joao Gante <joao@huggingface.co>

docs/source/en/_toctree.yml

@@ -296,6 +296,8 @@
       title: Trainer
     - local: main_classes/deepspeed
       title: DeepSpeed
+    - local: main_classes/executorch
+      title: ExecuTorch
     - local: main_classes/feature_extractor
       title: Feature Extractor
     - local: main_classes/image_processor