opensource changes and adaptations

CODEOWNERS

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+# New top-level dir creation requires approvals from codeowners.
+# [Root-Level]
+* @dfinity-lab/teams/release-teams

CONTRIBUTING.md

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+# Contributing to journald-parser
+
+Welcome to journald-parser! We are excited to have you contribute to our project. By following this guide, you can help us improve the library and make it even better.
+
+## Table of Contents
+
+1. [Introduction](#introduction)
+2. [Getting Started](#getting-started)
+    - [Fork the Repository](#fork-the-repository)
+    - [Clone the Repository](#clone-the-repository)
+3. [Making Changes](#making-changes)
+4. [Testing](#testing)
+5. [Submitting Pull Requests](#submitting-pull-requests)
+6. [Contact](#contact)
+7. [Acknowledgments](#acknowledgments)
+
+## Introduction
+
+journald-parser is a library for parsing systemd journal entries.
+
+We welcome contributions from everyone, whether you're a seasoned developer or just getting started with open-source. You can contribute in many ways, such as:
+
+- Fixing bugs
+- Adding new features
+- Improving documentation
+- Enhancing test coverage
+- Reporting issues
+- Providing feedback
+
+## Getting Started
+
+To get started with contributing to journald-parser, follow the steps below:
+
+### Fork the Repository
+
+Click the "Fork" button at the top right corner of the repository to create your own fork.
+
+### Clone the Repository
+
+Clone your forked repository to your local development environment:
+
+```bash
+git clone https://github.com/your-username/journald-parser.git
+cd journald-parser
+```
+
+Replace `your-username` with your GitHub username.
+
+## Making Changes
+
+Now you can make changes to the codebase. Follow these best practices:
+
+- Create a new branch for each contribution:
+
+```bash
+git checkout -b your-branch-name
+```
+
+- Write clear and concise commit messages.
+- Make atomic commits for logically separate changes.
+- Make sure your code is formatted according to the project's style guidelines.
+
+```bash
+cargo clippy
+```
+
+## Testing
+
+We highly value the quality of our codebase, and tests play a crucial role in ensuring that quality. Before submitting your changes, run the test suite:
+
+```bash
+cargo test
+```
+
+Make sure all the tests pass successfully.
+
+## Submitting Pull Requests
+
+Once you've made the necessary changes and ensured the tests pass, it's time to submit your contribution:
+
+1. Push your changes to your forked repository:
+
+```bash
+git push origin your-branch-name
+```
+
+2. Go to the GitHub repository page for journald-parser.
+3. Click on the "Pull Requests" tab and then click "New Pull Request."
+4. Select your branch from the dropdown and provide a descriptive title and summary of your changes.
+5. If your pull request addresses any issues, reference them using the following syntax: "Fixes #issue_number."
+6. Submit the pull request, and it will be reviewed by our team.
+
+## Contact
+
+If you have any questions or need further assistance, you can reach out to us via the following channels:
+
+- GitHub Issues: [journald-parser Issues](https://github.com/dfinity/journald-parser/issues)
+
+## Acknowledgments
+
+We would like to express our gratitude to all contributors who help make journald-parser better with their valuable contributions.
+
+Thank you for being a part of our community and happy contributing!

LICENCE

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+Copyright © 2023 DFINITY Foundation
+
+Each file in this repository is licensed under the license as
+described in the LICENSE file in the same directory that contains the
+file or, if that doesn't exist, the first LICENSE file in any
+higher-level directory.
+
+Unless stated otherwise as described above, all files in this
+directory are licensed under the Apache License, Version 2.0 (the
+"License"); you may not use these files except in compliance with the
+License. You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Some files in this repository are licensed under the Internet Computer
+Community Source License, Version 1.0 of which you can obtain a copy
+of at:
+
+  http://dfinity.org/licenses/IC-1.0
+
+Some other files are licensed under the Internet Computer Shared
+Community Source License, Version 1.0 of which you can obtain a copy
+of at:
+
+  http://dfinity.org/licenses/IC-shared-1.0
+
+The Apache-2.0 license is also copied below:
+
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