Add DeiT template for OTX classification task

[JihwanEom]

Summary

• Add DeiT template for multi-class classification task
• Support multi-label, hierarchical label
• Support incremental learning (ignore label)
• Support semi-supervised learning
• Pass unit tests
• Pass integration tests
• Pass E2E tests except explain, self-sl, supcon
• Validate HPO operations
• Update CHANGELOG
• Write unit tests

Future works (will be dealt in other PR)

• Optimize multi-label/h-label training recipe
• Update documentation -> Will be updated when promoting as regular template for OTX (not experimental)
• Support NNCF (resolve FQ issue)
• Support explain CLI
• Support self-supervised learning
• Support supcon

FQ issue in e2e test -> missing compression.json used for NNCF task, currently skipping TC:

FAILED tests/e2e/cli/classification/test_classification.py::TestToolsMultiClassClassification::test_pot_validate_fq[Custom_Image_Classification_deit-tiny] AssertionError: Reference file does not exist: /home/cosmos/ws/otx-vit/tests/e2e/cli/classification/reference/Custom_Image_Classification_deit-tiny/compressed_model.yml [num_fq = 137]
FAILED tests/e2e/cli/classification/test_classification.py::TestToolsMultilabelClassification::test_pot_validate_fq[Custom_Image_Classification_deit-tiny] AssertionError: Reference file does not exist: /home/cosmos/ws/otx-vit/tests/e2e/cli/classification/reference/Custom_Image_Classification_deit-tiny/compressed_model.yml [num_fq = 137]
FAILED tests/e2e/cli/classification/test_classification.py::TestToolsHierarchicalClassification::test_pot_validate_fq[Custom_Image_Classification_deit-tiny] AssertionError: Reference file does not exist: /home/cosmos/ws/otx-vit/tests/e2e/cli/classification/reference/Custom_Image_Classification_deit-tiny/compressed_model.yml [num_fq = 137]

License

• I submit my code changes under the same Apache License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below).

# Copyright (C) 2023 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

[jaegukhyun]

LGTM, Could we avoid class.name?

[harimkang]

LGTM

[eunwoosh]

LGTM

[jaegukhyun]

Thank you for your effort! This could be a great start to join transformer to OTX