feat: migrate to ESLint v9 with flat config

- Remove legacy .eslintrc.js configuration
- Add modern eslint.config.js with flat config format
- Update to @eslint/js v9.36.0 and ESLint v9.36.0
- Remove del-cli dependency
- Bump version to 2.0.2

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

🍰 feature `no-destroy` supported (#6)

当播放器的容器带有 `no-destroy` 类时该播放器不会被销毁与重载，适合不间断播放的全站播放器使用。
不影响第一次加载。