feat: support all variations of responseTypes

[Demonsthere]

Expand validation and add tests for the following variations of responseTypes:

  responseTypes:
    - id_token
    - code
    - token
    - code token
    - code id_token
    - id_token token
    - code id_token token

Related Issue or Design Document

• Fixes response_type=id_token+token #101

Checklist

• I have read the contributing guidelines
  and signed the CLA.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security vulnerability, I
  confirm that I got green light (please contact
  security@ory.sh) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added necessary documentation within the code base (if
  appropriate).

Further comments