dsh-play-revenue: Play Revenue Estimation

The `dsh-play-revenue` plugin for DSH is designed for playback revenue estimation and is licensed under the MIT License. Its core function is to perform precise parameter-based calculations and return results, with no network dependency, making it suitable for local execution. The plugin depends on relevant DeepSeek tool libraries, and it is advisable to review the source code and license before installation. Developers can install it via the specified command and invoke its tool in a session to calculate revenue.