chore: Create pyproject.toml

[hangfei]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @hangfei, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a pyproject.toml file to streamline and standardize the project's build process, dependency management, and development tool configurations. This change aims to improve maintainability, ensure consistent code quality, and simplify the setup for contributors by consolidating project-specific settings into a single, widely adopted standard.

Highlights

• New Project Configuration File: A new pyproject.toml file has been added to the repository, centralizing project metadata, build system configuration, and various development tool settings.
• Standardized Build System: The project now uses flit_core as its build backend, aligning with modern Python packaging standards and simplifying the build and distribution process.
• Integrated Development Tooling: Configurations for pyink (code formatter), isort (import sorter), pytest (testing framework), and mypy (static type checker) are now defined within pyproject.toml, ensuring consistent development practices across the project.

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[gemini-code-assist]

Code Review

This pull request introduces the pyproject.toml file, which is a great step towards modernizing the project's packaging and tooling configuration. The setup for flit, pyink, isort, pytest, and mypy looks solid. I've left a couple of suggestions to improve dependency management and correct project URLs for better clarity and stability.

[gemini-code-assist]

The google-adk dependency is not version-pinned. This can lead to your package breaking if a new version of google-adk with backward-incompatible changes is released. It's a best practice to specify a version range to ensure your project's stability, similar to how google-genai is specified (e.g., "google-adk >= A.B.C, < D.E.F").

[gemini-code-assist]

The repository and changelog URLs appear to point to the core adk-python repository instead of this community repository. Based on the project name (google-adk-community) and the README.md, these should probably point to the adk-python-community repository.

Suggested change

	repository = "https://github.com/google/adk-python"
	changelog = "https://github.com/google/adk-python/blob/main/CHANGELOG.md"
	repository = "https://github.com/google/adk-python-community"
	changelog = "https://github.com/google/adk-python-community/blob/main/CHANGELOG.md"