dsh-exercise-calories: Exercise Caloric Expenditure Calculation

The DSH ecosystem extends functionality through plugins. The `dsh-exercise-calories` plugin provides a lightweight local solution for calculating exercise-calorie consumption. Maintained by uckkk and licensed under the MIT License, it is implemented in pure Node.js and has no network dependencies. After installation, the `exercise_calories` tool can be used for precise calculations, requiring dependencies on `@deepseek-ai/cordis` and `@deepseek-ai/dsh-tools`.