Memory map shared weights when possible

[ericcraw]

https://jira.devtools.intel.com/browse/CVS-174585

[Copilot]

Pull Request Overview

This PR introduces memory mapping functionality for shared weights in the OpenVINO execution provider to improve performance by avoiding unnecessary memory copies. The changes enable direct memory mapping of external weight files to device tensors when possible.

• Added version check macro for OpenVINO to conditionally enable features based on version
• Implemented memory mapping support for weight files with device-specific optimizations
• Refactored tensor creation to use memory-mapped weights when available, falling back to traditional copying

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
onnxruntime/core/providers/openvino/ov_interface.h	Added version check macro for OpenVINO compatibility
onnxruntime/core/providers/openvino/contexts.h	Extended WeightsFile class with device mapping functionality
onnxruntime/core/providers/openvino/backend_utils.cc	Implemented memory mapping logic and refactored tensor creation

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