feat: enhance filename index status handling and pinyin output - #408

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Include file: <QVariant> not found. Please note: Cppcheck does not need standard library headers to get proper results.

Include file: <QSet> not found. Please note: Cppcheck does not need standard library headers to get proper results.

Include file: <QString> not found. Please note: Cppcheck does not need standard library headers to get proper results.

The function 'contentIndexVersion' is never used.

The function 'fileNameIndexVersion' is never used.

The function 'fileNameIndexStatus' is never used.

Include file: <dfm-search-lib/utils/searchutility.h> not found. Please note: Cppcheck does not need standard library headers to get proper results.

Include file: <dfm-search-lib/utils/lucenequeryutils.h> not found. Please note: Cppcheck does not need standard library headers to get proper results.

Include file: <dfm-search-lib/utils/filenameblacklistmatcher.h> not found. Please note: Cppcheck does not need standard library headers to get proper results.

Include file: <dfm-search/dsearch_global.h> not found. Please note: Cppcheck does not need standard library headers to get proper results.