Phi-2 Core AI conversion for Aether Kit

Upstream checkpoint: microsoft/phi-2
Revision: 9a5117d15e407c48fa40f8adbac1244abae52d6f
Original model/software: Copyright (c) Microsoft Corporation; MIT License (LICENSE).

Conversion tooling: Aether Kit, Apache-2.0
https://github.com/bubstackdev/aether-kit
Source commit: 1881cf48628c8f15a7e8e92ed38098a68865063e
Architecture reference: Hugging Face Transformers 4.57.3 Phi implementation,
Apache-2.0, copyright Microsoft and the HuggingFace Inc. team.
No instruction tuning or further model training was performed for this conversion.