Introducing AGENTS.md

[napetrov]

This PR introducing initial version of AGENTS.md and instructions for copilot

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[coveralls]

coverage: 86.248%. remained the same
when pulling a4d95a0 on napetrov:dev/napetrov_agents
into ce41a87 on IntelPython:master.

[Copilot]

Pull request overview

This PR introduces comprehensive AI agent documentation (AGENTS.md files) across the dpctl repository to guide AI assistants in understanding the codebase structure, conventions, and patterns. It also adds corresponding GitHub Copilot instruction files to enforce these patterns during code review and generation.

Changes:

• Added AGENTS.md files documenting architecture, patterns, and conventions for each major component (core bindings, tensor operations, C++ kernels, memory management, testing, and C API layer)
• Created GitHub-specific instruction files that reference the AGENTS.md documentation for automated code review guidance
• Established a root-level AGENTS.md that provides project overview and links to component-specific documentation

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
AGENTS.md	Root documentation providing project overview, architecture diagram, and directory guide
dpctl/AGENTS.md	Documentation for core SYCL bindings covering Cython conventions and extension type patterns
dpctl/tensor/AGENTS.md	Guide for Array API tensor operations and elementwise wrapper patterns
dpctl/tensor/libtensor/AGENTS.md	Documentation for C++ SYCL kernel implementations including functor and factory patterns
dpctl/memory/AGENTS.md	USM memory management documentation covering memory types and lifetime rules
dpctl/program/AGENTS.md	SYCL kernel compilation documentation and usage patterns
dpctl/utils/AGENTS.md	Utility functions documentation focusing on queue validation
dpctl/tests/AGENTS.md	Test suite patterns and coverage requirements
libsyclinterface/AGENTS.md	C API layer documentation covering naming conventions and memory ownership
.github/instructions/*.instructions.md	GitHub Copilot instruction files referencing AGENTS.md for each component

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