dsh-newborn-care: Newborn Care Plugin

The DSH plugin `dsh-newborn-care` focuses on providing newborn care recommendations. Implemented entirely in Node.js, it requires no network access and supports returning specific care plans through parameters. Developers can install it using the `dsh plugin add` command and invoke it in a session without any configuration. When using it, be mindful of permission checks; its medical advice is for reference only, and users should follow professional medical guidance.