Add option to FixSongs to Ignore Previously Checked Files that were Not Matched.
Would be done for checking SongKongId, if song has songkongId but not mb ids then not matched, if has both then will be processed according to For songs already Matched option (Rematch/Update Metadata/Ignore)
Useful if dealing with large collections and want to just update matched files without wasting time trying to rematch files that were not matched last time round and therefore unlikely to match this time.
Also useful SongKong fails part way through a large matching run so with this option can skip over files that it tried to match and failed
Fixed, the ignored files still get invcluded to the report but we make no attempt to try and match them.
Rule for ignoring is they have a SONGKONG_ID but don't have MB_RECORDING_ID or a URL_DISCOGS_ID.
Option should not need to be used in usual case