fix .at() problem in swig for test_fast_scan_ivf.py

Signed-off-by: Alexandr Guzhva <alexanderguzhva@gmail.com>

Author: alexanderguzhva

faiss/python/swigfaiss.swig

@@ -286,6 +286,9 @@ namespace std {
 %template(RepeatVector) std::vector<faiss::Repeat>;
 %template(ClusteringIterationStatsVector) std::vector<faiss::ClusteringIterationStats>;
 %template(ParameterRangeVector) std::vector<faiss::ParameterRange>;
+%template(MaybeOwnedVectorUInt8Vector) std::vector<faiss::MaybeOwnedVector<uint8_t> >;
+%template(MaybeOwnedVectorInt32Vector) std::vector<faiss::MaybeOwnedVector<int32_t> >;
+%template(MaybeOwnedVectorFloat32Vector) std::vector<faiss::MaybeOwnedVector<float> >;
 
 #ifndef SWIGWIN
 %template(OnDiskOneListVector) std::vector<faiss::OnDiskOneList>;