Tested dataIngest and nexusTransfer APIs together

APIs/dataIngestAPI.py

APIs/nexusTransferAPI.py

src/sender/DataDispatcher.py

src/sender/DataManager.py

src/sender/SignalHandler.py

src/sender/TaskProvider.py

src/sender/dataFetchers/getFromQueue.py

test/API/test_dataIngest.py

test/API/test_dataIngestWithNexusTransfer.py

test/API/test_nexusTransferAPI.py