Changes to logging levels:
- Changed fuzzy_matcher channel database loading logs to DEBUG level
- Changed plugin validation and API authentication logs to DEBUG level
- Changed notification sending log to DEBUG level
- Changed per-file channel loading log to DEBUG level
Enhanced INFO logs:
- Updated total channels loaded log to include database names
- Added channel group statistics logging showing:
* Total number of groups processed
* For each group: name, channel count, and matched stream count
* Shows first 10 groups with summary for remaining groups
Benefits:
- Cleaner INFO logs show only essential information
- Detailed debugging information available at DEBUG level
- Better visibility into channel group processing and stream matching
- Easier troubleshooting with group-level statistics
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