Improve PlaySuisse extractor: enhance episode naming and error handling
- Modified episode naming to include series name: "Series Name - Episode Name"
- Added robust error handling to prevent NoneType errors
- Improved playlist handling for series with multiple episodes
- Enhanced data validation in _extract_single method
- Updated _real_extract to handle potential None returns from _extract_single
These changes improve the reliability of the extractor and provide more
informative file names for series episodes, making content easier to identify
and organize.
