Introduce add_arg_in! andadd_outmacros to reduce boilerplate in UPnP action argument setup. Refactor all actions (Play, Stop,...GetPositionInfo) to use macros instead of repetitive add_argument calls. Also remove unused blank line in pipeline.rs.
Introduce add_arg_in! andadd_outmacros to reduce boilerplate in UPnP action argument setup. Refactor all actions (Play, Stop,...GetPositionInfo) to use macros instead of repetitive add_argument calls. Also remove unused blank line in pipeline.rs.