start mongodb client

3d_party/mongo-c-driver/install.sh

CMakeLists.txt

common/cpp/CMakeLists.txt

common/cpp/include/database/mongodb_client.h

common/cpp/src/database/CMakeLists.txt

common/cpp/src/database/mongodb_client.cpp

tests/worker/folder_to_db/check_linux.sh

worker/api/cpp/CMakeLists.txt

worker/tools/folder_to_db/CMakeLists.txt

worker/tools/folder_to_db/unittests/test_folder_to_db.cpp