write a Description, Contributing.md , Code of conduct, Security policy, Issue templates, Pull request template

1. Description: a description which explain best about organization and this repo, and why this repo.
2. Contributing: total info regarding how to contribute and step by step process and guide-line for new members
3. Code of conduct: for welcoming inclusive, and respectful environment for all contributors.
4. Security policy: maintaining the security and integrity of project. providing clear guidelines for reporting, assessing, and resolving vulnerabilities,
5. Issue templates: Issue templates help streamline collaboration by providing structured guidelines for contributors when they open an issue in repository,
6. Pull request template: PR Template helps ensure that contributors provide the necessary details when submitting PRs. It creates consistency, improves code review efficiency, and makes collaboration smoother.