Karma support for Sigv4 authentication

[dili-pk]

Hi,
Our team has been working with Karma dashboard from a very long time.
Currently, we are moving to cloud setup, so we will be setting up our observability with Amazon Managed Prometheus.
We would like to continue using Karma with AMP. However, sigv4 authentication is not yet supported in Karma, so we are unable to connect it.
We also tried using the aws-sigv4-proxy for Karma with no luck.
https://github.com/awslabs/aws-sigv4-proxy

Would like to know if

1. There are plans or future roadmaps to implement sigv4 authentication for Karma, so we can connect with Amazon Managed prometheus AlertManager APIs.
2. Do we have any example where we can set-up Karma using sigv4-proxy?

Thank you!!

[dili-pk]

We managed to get this working with sigv4-proxy. But would be interested to know id there are plans to integrate aigv4 authentication for Karma in future