refactor tests

receiver/CMakeLists.txt

receiver/src/request.cpp

receiver/src/request.h

receiver/src/request_handler/authorization_client.cpp

receiver/src/request_handler/authorization_client.h

receiver/src/request_handler/request_factory.cpp

receiver/src/request_handler/request_factory.h

receiver/src/request_handler/request_handler_authorize.cpp

receiver/src/request_handler/request_handler_authorize.h

...request_handler/request_handler_initial_authorization.cpp

...c/request_handler/request_handler_initial_authorization.h

...quest_handler/request_handler_secondary_authorization.cpp

...request_handler/request_handler_secondary_authorization.h

receiver/src/request_handler/structs.h

receiver/unittests/receiver_mocking.h

receiver/unittests/request_handler/test_request_factory.cpp

...tests/request_handler/test_request_handler_authorizer.cpp

...ver/unittests/request_handler/test_request_handler_db.cpp

...request_handler/test_request_handler_db_check_request.cpp

...ests/request_handler/test_request_handler_db_get_meta.cpp