feat: gateway jwt auth supports revoked tokens

[nicoloboschi]

New config inside the jwt config revoked-tokens-store to configure to an s3 bucket.

provider: jwt
configuration:
  auth-claim: xx
  revoked-tokens-store:
    type: s3
    refresh-period-seconds: 30
    configuration: 
     s3-bucket: xx
     s3-object: xx
     s3-access-key: xx
     s3-secret-key: xx

I've also made all the jwt config kebab case
Currently only implemented for jwt but it's easy to extend to others.

Note that if the bucket or object doesn't exist, the auth works normally.
The object must be in format:

token1
token2
token3
...