Authenticating with oauth azure managed identity

[dtheodor]

I am looking to authenticate to eventhubs (kafka protocol) through azure managed identity, which is in general the recommended way to authenticate security-wise. This is possible to implement through custom oauth callback, but I'd rather not re-implement the callback in every language and librdkafka binding I need to support. Would this project consider supporting this authentication method directly? I would guess it would be added as the option sasl.oauthbearer.method: azure_managed_identity and would implement the appropriate callbacks like sasl.oauthbearer.method: oidc does.