Add ability to collect outgoing grpc metrics

[sashayakovtseva]

Hello!

I am using github.com/zitadel/zitadel-go/v3/pkg/client to manage Zitadel from my application and I'd like to monitor my outgoing requests.

While there is one way of doing so by writing a custom Zitadel client wrapper that collects metrics, I think it would be better and easier for end users to pass prometheus interceptor (https://github.com/grpc-ecosystem/go-grpc-middleware/tree/main/providers/prometheus) directly to grpc connection.

Would you consider adding new client.Option for this purpose?

[fforootd]

I think this could be a great addition 👍

WDYT @zitadel/engineers

[adlerhurst]

I think this is a great idea. I would prefer to use otel instead of a proprietary product.

[github-actions]

🎉 This issue has been resolved in version 2.3.0 🎉

The release is available on GitHub release

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