Update to Generate and Refresh Token Response

To aid our developers with managing the expiration of tokens, GoTab will now return the following fields tokenType, initiated, expires and expiresIn in the Generate and Refresh Token response.

{
    "tokenType": "Bearer",
    "token": "",
    "initiated": 1659020513,
    "expires": 1659106913,
    "expiresIn": 86400,
    "refreshToken": ""
}