[OPDATA-3889] Full SFTP EA for FTSE

[chray-zhang]

Closes https://smartcontract-it.atlassian.net/browse/OPDATA-3889

Description

• Added sftp endpoint and sftp transport

• Input will be the Index name from a list of possible supported indicies

• Have screenshots of the return values and responses underneath

• Only supports FTSE100, RUSSELL1000, RUSSELL2000, and RUSSELL3000 as of right now

• CSV Parsing has a strict structure that it follows or expects

• DD and mm Turn over happens at 4 PM GMT and has a 3 day fallback if file not found. We add this because the file population is varied and there is no concrete schedule that we can follow. See downloadFile on line 195 of transport/sftp.ts

Steps to Test

Example curl commands:

curl -s \
  --header "Content-Type: application/json" \
  --request POST \
  --data '{
    "data": {
      "endpoint": "sftp",
      "instrument": "Russell3000INDEX"
    }
  }' \
  http://localhost:8080/ | jq

Screenshots

Quality Assurance

• [ x] If a new adapter was made, or an existing one was modified so that its environment variables have changed, update the relevant infra-k8s configuration file.
• [ x] If a new adapter was made, or an existing one was modified so that its environment variables have changed, update the relevant adapter-secrets configuration file or update the soak testing blacklist.
• [ x] If a new adapter was made, or a new endpoint was added, update the test-payload.json file with relevant requests.
• The branch naming follows git flow (feature/x, chore/x, release/x, hotfix/x, fix/x) or is created from Jira.
• [ x] This is related to a maximum of one Jira story or GitHub issue.
• [ x] Types are safe (avoid TypeScript/TSLint features like any and disable, instead use more specific types).
• [ x] All code changes have 100% unit and integration test coverage. If testing is not applicable or too difficult to justify doing, the reasoning should be documented explicitly in the PR.