Image classification task guide

EfficientFormerConfig
[[autodoc]] EfficientFormerConfig
EfficientFormerImageProcessor
[[autodoc]] EfficientFormerImageProcessor
    - preprocess

EfficientFormerModel
[[autodoc]] EfficientFormerModel
    - forward
EfficientFormerForImageClassification
[[autodoc]] EfficientFormerForImageClassification
    - forward
EfficientFormerForImageClassificationWithTeacher
[[autodoc]] EfficientFormerForImageClassificationWithTeacher
    - forward