Removed all references to `CHANGELOG.md` in documentation and templates, and deleted the `docs/changelog.md` file. This change reflects a shift away from maintaining a changelog in favor of other documentation practices.
- Created detailed YAML templates for various issue types to streamline user submissions and improve issue tracking.
- Added a comprehensive pull request template to guide contributors in providing necessary information.
- Developed a contributing guide to outline project setup, contribution types, testing procedures, and code style guidelines.
xixu-me