DDF parsing

[chelsea-EYDS]

What Has Changed:

• Renamed parseTDI lambda to parseFlatFile
• Added DDF.TXT to sample files for testing and demo
• Created a class definition for parsing of DDF Details (details only)
• Added conditional in the parser to check for DDF file type
• Added scripts to the makefile to add DDF.TXT -> s3 then parse and DDF.json -> s3
• Moved sample files into backend and updated makefile scripts
  sample output:

{ 
 "details": [{
  "resourceType": "DDFDetails",
  "rcd_type": 2,
  "merchant_no": 22046144,
  "terminal_id": "Y22046144001",
  "filler1": "",
  "card_vendor": "V",
  "card_id": "XXXXXXXXXXXXXXXXXXX",
  "transaction_date": "20220330",
  "transaction_time": "0810",
  "settlement_date": "20220330",
  "transaction_code": "10",
  "filler2": "A",
  "approval_code": "TEST",
  "filler3": "",
  "transaction_amount": 100,
  "unknown2": "",
  "merchant_work_area": "100329420007511333117589202",
  "filler4": "" 
 }]
}

[vyasworks]

Let us include the DDF, TDI17 and TDI34 spec files somewhere in the repo as documentation.