[enh] Upgrading to LevelDB for IIndex

app/lib/common-libs/errors.ts

app/lib/common-libs/reduce.ts

app/lib/common-libs/reduceConcat.ts

app/lib/dal/fileDAL.ts

app/lib/dal/indexDAL/abstract/IIndexDAO.ts

app/lib/dal/indexDAL/leveldb/LevelDBCindex.ts

app/lib/dal/indexDAL/leveldb/LevelDBIindex.ts

app/lib/dal/indexDAL/leveldb/LevelDBTable.ts

app/lib/dal/indexDAL/leveldb/generic/LevelDBDataIndex.ts

.../dal/indexDAL/leveldb/indexers/LevelDBWrittenOnIndexer.ts

...b/dal/indexDAL/leveldb/indexers/LevelIIndexHashIndexer.ts

...b/dal/indexDAL/leveldb/indexers/LevelIIndexKickIndexer.ts

...ib/dal/indexDAL/leveldb/indexers/LevelIIndexUidIndexer.ts

app/lib/indexer.ts

app/lib/system/directory.ts

app/modules/crawler/lib/sync/v2/GlobalIndexStream.ts

test/integration/identity/identity-revocation-test.ts