feat: consistent response return between local and jwt strategy

[bwgjoseph]

Currently, when /authentication service is trigger with local strategy, it is missing authentication.accessToken and authentication.payload field as compared to jwt strategy

This commit attempts to ensure consistency in both response

// response from 'jwt' strategy
{
    "accessToken": "<token>",
    "authentication": {
        "strategy": "local",
        "accessToken": "<token>",
        "payload": {
            "iat": 1597565489,
            "exp": 1597651889,
            "aud": "https://yourdomain.com",
            "iss": "feathers",
            "sub": "5edb8a3f8a2e8936c429d5ba",
            "jti": "e64f9caa-e738-47da-9c27-fe8c026ab627"
        }
    },
    "user": {
        "_id": "123456",
        "email": "helloworld@gmail.com",
        "createdAt": "2020-06-06T12:21:19.167Z",
        "updatedAt": "2020-06-06T12:24:55.164Z",
        "__v": 0
    }
}

// response from 'local' strategy (before)
{
    "accessToken": "<token>",
    "authentication": {
        "strategy": "local"
    },
    "user": {
        "_id": "123456",
        "email": "helloworld@gmail.com",
        "createdAt": "2020-06-06T12:21:19.167Z",
        "updatedAt": "2020-06-06T12:24:55.164Z",
        "__v": 0
    }
}

// response from 'local' strategy (after)
{
    "accessToken": "<token>",
    "authentication": {
        "strategy": "local"
        "accessToken": "<token>",
        "payload": {
            "iat": 1597565489,
            "exp": 1597651889,
            "aud": "https://yourdomain.com",
            "iss": "feathers",
            "sub": "5edb8a3f8a2e8936c429d5ba",
            "jti": "e64f9caa-e738-47da-9c27-fe8c026ab627"
        }
    },
    "user": {
        "_id": "123456",
        "email": "helloworld@gmail.com",
        "createdAt": "2020-06-06T12:21:19.167Z",
        "updatedAt": "2020-06-06T12:24:55.164Z",
        "__v": 0
    }
}

---

I added in authentication package instead of authentication-local because jsonwebtoken is already available and it seem like the correct place to add

[daffl]

That makes sense, thank you!