Add ortpackage recipes

[xiaoyu-work]

This pull request adds new documentation, usage recipes, and supporting files to enable packaging both the Qwen3.5-0.8B and Phi-4-mini-reasoning models into ONNX Runtime .ortpackage format for GenAI workflows. It introduces step-by-step guides for exporting CPU and GPU variants, combining them, and running inference, as well as updating .gitignore and requirements for these workflows.

ONNX Runtime ortpackage support and documentation:

• Added detailed README.md guides for both Qwen-Qwen3.5-0.8B/ortpackage and microsoft-Phi-4-mini-reasoning/ortpackage directories, describing how to export Hugging Face models to ONNX (CPU/GPU), combine them into a .ortpackage, and run inference using onnxruntime-genai. [1] [2]
• Updated .gitignore files in Qwen-Qwen3.5-0.8B/ortpackage, microsoft-Phi-4-mini-reasoning/ortpackage, and microsoft-Phi-4-mini-reasoning/OpenVINO to exclude generated CPU/GPU folders and .ortpackage artifacts. [1] [2]
• Added requirements.txt files specifying dependencies on olive-ai[mobius-ai] and onnxruntime-genai for both model directories.
• Enhanced microsoft-Phi-4-mini-reasoning/OpenVINO/README.md with instructions for combining OpenVINO IR outputs into a .ortpackage for GenAI runtime.

[Copilot]

Pull request overview

Adds new .ortpackage recipe documentation and supporting files to package and run Qwen3.5-0.8B and Phi-4-mini-reasoning with ONNX Runtime GenAI, including export (CPU/GPU), package generation, and inference usage.

Changes:

• Added ortpackage usage guides + minimal dependency lists for Qwen/Qwen3.5-0.8B and microsoft/Phi-4-mini-reasoning.
• Added per-recipe .gitignore rules to exclude generated CPU/GPU export folders and produced .ortpackage artifacts.
• Extended the Phi-4-mini-reasoning OpenVINO recipe README with an ortpackage generation command, plus an ignore rule for the generated package.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
Qwen-Qwen3.5-0.8B/ortpackage/README.md	New end-to-end ortpackage recipe guide (export CPU/GPU, package, run inference).
Qwen-Qwen3.5-0.8B/ortpackage/requirements.txt	Adds dependencies needed for the ortpackage workflow.
Qwen-Qwen3.5-0.8B/ortpackage/.gitignore	Ignores generated export outputs and package directory.
microsoft-Phi-4-mini-reasoning/ortpackage/README.md	New end-to-end ortpackage recipe guide (export CPU/GPU, package, run inference).
microsoft-Phi-4-mini-reasoning/ortpackage/requirements.txt	Adds dependencies needed for the ortpackage workflow.
microsoft-Phi-4-mini-reasoning/ortpackage/.gitignore	Ignores generated export outputs and package directory.
microsoft-Phi-4-mini-reasoning/OpenVINO/README.md	Adds instructions to combine OpenVINO outputs into a .ortpackage.
microsoft-Phi-4-mini-reasoning/OpenVINO/.gitignore	Ignores the generated OpenVINO ortpackage output.

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