Comprehensive API refactoring and documentation improvements for media_controller plugin#2

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copilot/fix-eb2c9417-b726-4826-ae32-bc0d2cc0bbacshixin627/media_controller:copilot/fix-eb2c9417-b726-4826-ae32-bc0d2cc0bbacfrom

copilot/fix-36ab6a75-64b1-4985-be3a-bcf10de8586bshixin627/media_controller:copilot/fix-36ab6a75-64b1-4985-be3a-bcf10de8586bCopy head branch name to clipboard