[move][logger] Move logger.py to sparseml.core

[rahul-tuli]

This PR migrates existing logger framework to sparseml.core

Main Changes:

• Move src/sparseml/pytorch/utils/logger.py --> src/sparseml/core/logger.py + update __init__.py files
• Update usages
• Move Tests

Also asserted that imports work just fine:

$ python                                                                                                   (migrate-existing-logger-framework|✚1⚑2)
[GCC 7.5.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from sparseml.pytorch.sparsification import LayerPruningModifier
>>> from sparseml.pytorch.utils import log_sparsification_info
>>> from sparseml.pytorch.optim import RecipeManagerStepWrapper
>>> 

Note: Updated import logic to include loggers in sparseml/pytorch/utils/__init__.py all above import verified to still work as expected

[dsikka]

LGTM pending tests

[Satrat]

Looks like there is failing integration test, but otherwise looks fine to me!

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.9.18/x64/bin/sparseml.yolov5.export_onnx", line 5, in <module>
    from sparseml.yolov5.scripts import export
  File "/opt/hostedtoolcache/Python/3.9.18/x64/lib/python3.9/site-packages/sparseml/yolov5/scripts.py", line 17, in <module>
    from yolov5.export import export_run
  File "/opt/hostedtoolcache/Python/3.9.18/x64/lib/python3.9/site-packages/yolov5/export.py", line 76, in <module>
    from yolov5.utils.neuralmagic import apply_recipe_one_shot, export_sample_inputs_outputs, neuralmagic_onnx_export
  File "/opt/hostedtoolcache/Python/3.9.18/x64/lib/python3.9/site-packages/yolov5/utils/neuralmagic/__init__.py", line 1, in <module>
    from .sparsification_manager import *
  File "/opt/hostedtoolcache/Python/3.9.18/x64/lib/python3.9/site-packages/yolov5/utils/neuralmagic/sparsification_manager.py", line 7, in <module>
    from sparseml.pytorch.utils import SparsificationGroupLogger
ImportError: cannot import name 'SparsificationGroupLogger' from 'sparseml.pytorch.utils' (/opt/hostedtoolcache/Python/3.9.18/x64/lib/python3.9/site-packages/sparseml/pytorch/utils/__init__.py)
tests/integrations/yolov5/test_yolov5.py E