Add CONTRIBUTING.md

[Copilot]

• Create CONTRIBUTING.md file based on project documentation and README
• Include sections for:
  • Getting started with the project
  • Development environment setup (for C++, Python, TypeScript)
  • Code style guidelines (clang-format, ruff, Biome)
  • Pre-commit hooks
  • Running tests
  • Submitting pull requests
  • License information
• Run code review
• Run CodeQL security check
• Address feedback: add welcome message for issues/PRs
• Address feedback: simplify PR submission guidelines

Original prompt

---

This section details on the original issue you should resolve

<issue_title>需要一个contributing.md</issue_title>
<issue_description></issue_description>

<agent_instructions>请参考docs和readme，以及项目描述文件等信息</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes 需要一个contributing.md #65

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[Copilot]

Pull request overview

This PR adds a comprehensive CONTRIBUTING.md file to provide clear guidelines for contributors. The file is well-structured and accurately reflects the project's existing documentation, configuration files, and development practices.

• Establishes a complete contribution workflow from forking/cloning through PR submission
• Documents build instructions for all three language bindings (C++, Python, TypeScript/JavaScript) with correct version requirements
• Specifies code style tools and pre-commit hooks that match actual project configuration

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[hzhangxyz]

1. 你在前面需要欢迎issue和pr一下
2. Submitting Pull Requests那里，不要太多强制，大概建个branch（名字合理即可不用强制feature/xxx）然后介绍也不要强制一定包含什么

[Copilot]

1. 你在前面需要欢迎issue和pr一下
2. Submitting Pull Requests那里，不要太多强制，大概建个branch（名字合理即可不用强制feature/xxx）然后介绍也不要强制一定�...

Done in 53aa36c. Added "We welcome issues and pull requests from everyone." at the beginning, and simplified the PR submission section to remove forced branch naming and strict content requirements.