add COC & CONTRIB markdown files

CODE_OF_CONDUCT.md

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+# Code of Conduct for NShell
+
+We are committed to making participation in the NShell project a harassment-free experience for everyone.
+We ask that you follow this code of conduct to ensure a respectful and welcoming environment for all participants.
+
+## Our Pledge
+
+In the spirit of community, collaboration, and respect, we pledge to:
+
+- Be kind and considerate in our interactions.
+- Listen to others and value their contributions.
+- Acknowledge and address concerns raised by community members.
+- Provide helpful feedback and constructive criticism.
+
+## Our Standards
+
+Examples of behavior that contribute to a positive environment include:
+
+- Using inclusive and respectful language.
+- Being open to differing opinions, viewpoints, and experiences.
+- Sharing knowledge and experiences for the benefit of others.
+- Asking for clarification and offering help when needed.
+
+Examples of unacceptable behavior include:
+
+- Discriminatory, offensive, or harassing language or actions.
+- Trolling, insulting, or personally attacking others.
+- Disrupting discussions or project activities.
+- Repeatedly bringing up topics that have been resolved or disregarding community decisions.
+
+## Enforcement
+
+If you experience or witness unacceptable behavior, or have any concerns, please report it to the project maintainers immediately.
+
+Project maintainers are responsible for enforcing the Code of Conduct. They have the authority to remove issues, pull requests, or participants that do not adhere to this code.
+
+## Scope
+
+This Code of Conduct applies within all project spaces, including but not limited to:
+
+- The GitHub repository.
+- Communication channels (e.g., discussions, issues, PRs, etc.).
+- Any other platform where project-related discussions happen.
+
+---
+
+Thank you for helping us keep NShell a welcoming space for everyone. (b ᵔ▽ᵔ)b

CONTRIBUTING.md

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+# Contributing to NShell
+
+Thank you for considering contributing to NShell! We appreciate your efforts in improving the project. By participating, you agree to follow the guidelines laid out below.
+
+## How to Contribute
+
+### Reporting Issues
+If you encounter a bug or have a question, please report it using the "Issues" tab of the GitHub repository. Provide as much detail as possible about the issue, including:
+
+- A description of the problem.
+- Steps to reproduce the issue.
+- Expected and actual results.
+- Any relevant logs or error messages.
+
+### Submitting Code
+We welcome code contributions! To ensure the process is smooth, please follow these steps:
+
+1. **Fork the repository** and clone it to your local machine.
+2. **Create a new branch** for your changes. It's best to name it according to the feature or bug you're working on, e.g., `feature/new-feature` or `fix/fix-issue`.
+3. **Make your changes** and test them thoroughly.
+4. **Commit your changes** with a clear and concise commit message. Use the present tense (e.g., "fix: fix message", "feat: feature message").
+5. **Push your changes** to your forked repository.
+6. **Create a pull request** to the main repository, providing a description of the changes and why they are necessary.
+
+### Code Style
+Please adhere to the following guidelines when writing code:
+
+- Use consistent indentation (spaces, not tabs).
+- Write clear, concise, and self-explanatory variable names.
+- Include comments where necessary to explain complex logic.
+- Follow best practices for writing secure and efficient code.
+
+## Code Reviews
+All pull requests will undergo code review by the maintainers. They may request changes or provide feedback. Please respond promptly to ensure the PR can be merged.
+
+Thank you for your contributions ! <3
+
+---
+
+Happy coding, and thank you for contributing to NShell ! ヽ(・∀・)ﾉ