fix: mock response file

[saifrazabc]

Changes:

1. Add Static response file for response poll cron job processing.
2. Mocking response is dependent on CRA_INTEGRATION_ENABLED key.
3. if CRA_INTEGRATION_ENABLED = false , it will process static file else poll to File Transfer service.
4. if we want to process the any batch response file only we can create file manually & and write into the file = backend/storage/cra-ftp/inbound/TST0016.VRSP0001
5. Once Cron job run , It will pick this file process it and update the all different status.

[mdiapenabc]

Please remove these unused files