Make the debug logging level for `add_annotations` less verbose

Workum, Dirk-Jan van requested to merge fix_logging_level_add_annotations into develop

We found that pantools add_annotations can write enormous debug logs (in the <database>/logs/add_annotations<something>.log file). Therefore, this merge request will change the logging level of a lot of steps from "debug" to "trace".

Question for review: Do you agree with the current logging levels? (Please run it on your test case and check the log file.)

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