GONRG-1498: Move CSP dependencies to provider folder 2/2.

src/dags/libs/exceptions.py

src/dags/libs/handle_file.py

src/dags/libs/process_manifest_r3.py

src/dags/libs/refresh_token.py

src/dags/libs/source_file_check.py

src/dags/providers/README.md

src/dags/providers/blob_storage.py

src/dags/providers/credentials.py

src/dags/providers/exceptions.py

src/dags/providers/factory.py

src/dags/providers/gcp/__init__.py

src/dags/providers/gcp/gcp_blob_storage_client.py

src/dags/providers/gcp/gcp_credentials.py

src/dags/providers/types.py

src/plugins/operators/process_manifest_r3.py

tests/end-to-end-tests/fake_init.py

tests/plugin-unit-tests/mock_providers.py

tests/plugin-unit-tests/test_file_checker.py

tests/plugin-unit-tests/test_file_handler.py

tests/plugin-unit-tests/test_manifest_processor_r3.py