receiver updated for substreams

broker/src/asapo_broker/database/mongodb.go

common/cpp/include/database/database.h

common/cpp/include/unittests/MockDatabase.h

common/cpp/src/database/mongodb_client.cpp

common/cpp/src/database/mongodb_client.h

consumer/tools/folder_to_db/src/folder_db_importer.cpp

consumer/tools/folder_to_db/unittests/test_folder_to_db.cpp

examples/consumer/getnext_broker/check_linux.sh

examples/consumer/getnext_broker/check_windows.bat

examples/consumer/getnext_broker_python/check_linux.sh

examples/consumer/getnext_broker_python/check_windows.bat

examples/pipeline/in_to_out/check_linux.sh

examples/pipeline/in_to_out/check_windows.bat

examples/pipeline/in_to_out_python/check_linux.sh

examples/pipeline/in_to_out_python/check_windows.bat

receiver/src/request.cpp

receiver/src/request.h

receiver/src/request_factory.h

receiver/src/request_handler_db.cpp

receiver/src/request_handler_db.h