[DO NOT MERGE] Copy of 2384

[jambayk]

Add change to auto-detect ONNX external data files in NNCF compression pass.
If an ONNX model is locally sourced, the ONNXModelHandler points to just the .onnx file. This means that the EXTERNAL_DATA_DIR isn't set in AdvancedCompressionParameters, leading to NNCF failing to find the model weights.
This commit fixes that and allows auto-detecting the presence of an external data file, and will pass this path to NNCF AdvancedCompressionParameters if not already set manually with local sourcing or if chained with another pass that produces an ONNX model with external data

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• Add unit tests for this change.
• Make sure all tests can pass.
• Update documents if necessary.
• Lint and apply fixes to your code by running lintrunner -a
• Is this a user-facing change? If yes, give a description of this change to be included in the release notes.

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