apiCredentials in config.json

[vanshwassan]

• Remove "id" from pre-alpha. We don't have it in v0.2
• Add "apiCredentials"

  [
  {
  "oisTitle": "myOisTitle",
  "securitySchemeName": "mySecurityScheme",
  "securitySchemeValue": "${SS_MY_API_KEY}"
  }
  ]