Enable to override data configurations

[sungchul2]

Summary

This PR includes:

• Enable to override data configs in recipes
  • It enables to override data configs:
    • including single config (e.g. batch_size or num_workers )
    • nested namespace (e.g. sampler)
    • list of dicts (e.g. transforms)) like callbacks or logger

    ...
    overrides:
      data:
        ...
        train_subset:
          batch_size: 4 # update batch_size to 4
          transforms:
            # set transform's parameter(s) to be updated
            - class_path: old_transform1
              init_args:
                scale: # update scale to (320, 320)
                  - 320
                  - 320
            # if no old_transform2, it will be used as is
            - class_path: old_transform3
              init_args:
                prob: 0.7 # update prob to 0.7
            ...
          sampler:
            class_path: new_sampler # update samper from old one to new_sampler

  • If there is no predefined config in base config, it adds this
  • If you want to reset specific configs (especially transforms), use reset with list or string like below:

    ...
    overrides:
      reset:
        - data.train_subset.transforms
        - data.val_subset.transforms
        - data.test_subset.transforms
      ...
      data:
        ...
        train_subset:
          ...
          transforms:
            # set all new transforms for reinitialization
            - class_path: new_transform1
            - class_path: new_transform2
            - class_path: new_transform3
            ...
        # update val_subset.transforms and test_subset.transforms as well

    ...
    overrides:
      reset: data.train_subset.transforms # only update train_subset.transforms
      ...
      data:
        ...
        train_subset:
          ...
          transforms:
            - class_path: new_transform1
            - class_path: new_transform2
            - class_path: new_transform3
            ...
        # val_subset.transforms and test_subset.transforms will not be reset, but can be updated

• Update recipes

How to test

Checklist

• I have added unit tests to cover my changes.​
• I have added integration tests to cover my changes.​
• I have ran e2e tests and there is no issues.
• I have added the description of my changes into CHANGELOG in my target branch (e.g., CHANGELOG in develop).​
• I have updated the documentation in my target branch accordingly (e.g., documentation in develop).
• I have linked related issues.

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) 2024 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

[harimkang]

LGTM,
As next PR for this, could you please add a description and example of this new feature to the documentation below?
docs/source/guide/tutorials/advanced/configuration.rst