[CPU] Weightless cache support

[nshchego]

Details:

• Weightless cache support in the CPU plugin
• ...

Tickets:

• 161826

[t-jankowski]

Ok for core parts

[maxnick]

@EgorDuplensky , could you please review this PR?

[Copilot]

Pull Request Overview

This pull request implements weightless cache support for the CPU plugin in OpenVINO. The implementation allows for optimized cache storage when using CacheMode::OPTIMIZE_SIZE by storing only model structure without weight data, reducing cache file sizes.

• Adds weightless serialization/deserialization capabilities to the CPU plugin
• Implements cache mode configuration and weight path handling
• Extends test coverage for the new weightless caching functionality

Reviewed Changes

Copilot reviewed 28 out of 28 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/tests/functional/plugin/shared/src/behavior/compiled_model/model_cache.cpp	New test implementation for weightless cache accuracy validation
src/tests/functional/plugin/shared/include/behavior/compiled_model/model_cache.hpp	Header for weightless cache test framework
src/plugins/intel_cpu/src/utils/graph_serializer/serializer.cpp	Core serialization logic with weightless mode support
src/plugins/intel_cpu/src/utils/graph_serializer/deserializer.cpp	Core deserialization logic with origin weights handling
src/plugins/intel_cpu/src/plugin.cpp	Plugin integration with weightless cache mode detection and model building
src/plugins/intel_cpu/src/config.cpp	Configuration handling for cache mode property
src/plugins/intel_cpu/src/compiled_model.cpp	Compiled model export with weightless serialization
src/inference/src/dev/core_impl.cpp	Core implementation updates for weightless cache support
src/core/src/op/util/weightless_caching_attributes.cpp	Weightless cache attribute implementation

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