Request an access token using credentials

curl --request POST \
  --url https://api.quackai.com/api/v1/login/creds \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --data 'grant_type=<string>' \
  --data 'username=<string>' \
  --data 'password=<string>' \
  --data scope= \
  --data 'client_id=<string>' \
  --data 'client_secret=<string>'

{
  "access_token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.423fgFGTfttrvU6D1k7vF92hH5vaJHCGFYd8E",
  "token_type": "bearer"
}