set access for intro always to public

Signed-off-by: Sebastian Schüpbach <sebastian.schuepbach@unibas.ch>

mediametadatatodb_app/resources/MediametadataToDB.py

@@ -257,6 +257,7 @@ def _create_audio_snippet_entry(record, mariadb_cursor) -> list:
         logging.warning("No duration for audio found: Setting duration to 0")
         snippet_record['duration'] = 0
     snippet_record['sig'] = snippet_record['sig'] + '-intro'
+    snippet_record['access'] = 'public'
     # //@formatter:off
     snippet_record['duration'] = \
         30 if _normalize_duration(snippet_record['duration']) >= 30 \