Lifelog 1.0.0 : Added CONTRIBUTING.md + README images

CONTRIBUTING.md

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+## Contributing
+
+We welcome contributions from the community! To ensure smooth collaboration, please follow the guidelines below when submitting your changes:
+
+1. **Fork the repository**: Start by forking this repository to your own GitHub account.
+
+2. **Clone your fork**: Clone your forked repository to your local machine.
+
+   ```bash
+   git clone https://github.com/YOUR-USERNAME/REPO-NAME.git
+
+3. **Create a new branch**: Always create a new branch for your work, branching off the `dev` branch.
+```bash
+git checkout dev
+git checkout -b feature/your-feature-name
+```
+
+4. **Make your changes**: Implement your feature, fix bugs, or make improvements. Be sure to write clean, well-documented code.
+
+5. **Commit your changes**: Write clear and concise commit messages.
+```bash
+git add .
+git commit -m "Add brief description of your feature or fix"
+```
+
+6. **Push to your fork**: Push your changes to your forked repository on GitHub.
+```bash
+git push origin feature/your-feature-name
+```
+
+7. **Submit a pull request (PR)**: Once your changes are ready, open a pull request (PR) from your feature branch to the `dev` branch of this repository. Please make sure you **do not submit PRs to the `main` branch**.
+
+- Include a clear description of your changes in the PR.
+- Reference any relevant issues or tickets.
+
+### Important Guidelines
+
+- **All pull requests should be made to the `dev` branch**. Contributions submitted to other branches will not be accepted.
+
+- Ensure your code follows the existing style and conventions used in the project.
+
+- Run tests (if applicable) to ensure your changes don’t break existing functionality.
+
+Thank you for contributing! We appreciate your help in making this project better.