Added instruction on how to contribute to the project

Author: gubaidulinvadim

CONTRIBUTING.md

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+# Contributing to [Python Accelerator Middle Layer (PyAML)]
+
+Thank you for your interest in contributing to [PyAML]! This document outlines how you can help, whether you're fixing bugs, adding features, improving documentation, or participating in community discussions.
+
+## Ways to Contribute
+
+### 1. Reporting Issues
+- **Bugs & Feature Requests:** Open an issue on GitHub. Use clear titles and provide as much detail as possible (steps to reproduce, expected/actual behaviour, screenshots, etc.).
+- Use an issue template if it is applicable to you. Don't forget to assign an issue to a project and set the status of the issue to TODO.
+- **Before Submitting:** Check existing issues to avoid duplicates.
+
+### 2. Working on Tasks
+- **Kanban Board:** We use [GitHub Projects](https://github.com/orgs/python-accelerator-middle-layer/projects) to manage tasks. Each column represents a stage in the workflow (e.g., "To Do", "In Progress", "Review", "Done").
+- **Claiming a Task:** Comment and assign yourself on the issue or card to let others know you’re working on it. Move the card to "In Progress".
+- **Part-time Contributors:** It’s okay to work at your own pace. Just keep the community updated on your progress.
+
+### 3. Submitting Changes
+- **Fork & Branch:** Fork the repo and create a branch for your changes.
+- **Commits:** Write clear, atomic commit messages. Reference the issue number if applicable.
+- **Pull Requests (PRs):**
+  - Open a PR against the `main` branch.
+  - Include a description of your changes and reference the relevant issue.
+  - Ensure your code follows the project’s style and passes all tests.
+  - A maintainer will review your PR and may suggest changes.
+
+### 4. Documentation
+- **Improving Docs:** Fix typos, clarify instructions, or add missing documentation. Submit a PR as you would for code changes.
+- **Website:** Our project website is at [python-accelerator-middle-layer.github.io](https://python-accelerator-middle-layer.github.io/).
+
+## Community & Meetingss
+
+### Community Meetings
+- **Schedule:** Once every few months.
+- **Agenda:** Discuss project direction, upcoming features, and community questions.
+- **How to Join:** Write an email to the steering committee of PyAML pyaml-steering-committee-contact@esrf@fr. They will add you to the email list.
+- **Mattermost link**: [Mattermost](https://mattermost.hzdr.de/signup_user_complete/?id=cdcea9p8hfr3ic8jdrrydzxxpy&md=link&sbr=su)
+
+### Developer Meetings
+- **Schedule:** Bi-weekly, alternating with community meetings.
+- **Focus:** Technical discussions, code reviews.
+- **How to Join:** Write an email to the steering committee of PyAML pyaml-steering-committee-contact@esrf@fr. They will add you to the email list.
+
+## Getting Help
+- **Questions?** Open a discussion on GitHub or ask in our [Mattermost channel](https://mattermost.hzdr.de/signup_user_complete/?id=cdcea9p8hfr3ic8jdrrydzxxpy&md=link&sbr=su).
+- **Need Guidance?** Reach out to a maintainer or attend a maintainer or community meeting.
+
+## Recognition
+- All contributions are valued and recognised. Significant contributions may be highlighted in release notes or on the project website.
+
+---