Create a new provider app

curl --request POST \
  --url https://api.withampersand.com/v1/projects/{projectIdOrName}/provider-apps \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '{
  "externalRef": "external-id-123",
  "provider": "salesforce",
  "clientId": "client-id-123",
  "clientSecret": "client-secret-123",
  "scopes": [
    [
      "read",
      "write"
    ]
  ]
}'

{
  "id": "provider-app-123",
  "projectId": "project-456",
  "externalRef": "external-id-123",
  "provider": "salesforce",
  "clientId": "client-id-123",
  "scopes": [
    [
      "oauth",
      "offline",
      "crm.read"
    ]
  ],
  "createTime": "2023-11-07T05:31:56Z",
  "updateTime": "2023-11-07T05:31:56Z"
}