Add docs on SigNoz configuration with Istio

[pranay01]

For users who want to send Istio data to SigNoz, we should have a page documenting how they can add this.

This Jaeger doc can serve as an illustrative example

[pranay01]

Steps needed to enable Istio

1. Add zipkin receiver at this section

2. After changes this section should look like this
   

3. kubectl apply the changes
   kubectl -n platform apply -f deploy/kubernetes/otel-collector

[taniaduggal]

Hey @pranay01 . I wanna work on this issue .Could you help me to get started with it ?

[shivanshuraj1333]

There are a few things that we can collect.

1. Metrics - proxy metrics, Service-level metrics, Control plane metrics https://istio.io/latest/docs/concepts/observability/#metrics
2. Envoy Access Logs: https://istio.io/latest/docs/concepts/observability/#access-logs
3. Traces: by configuring either Zipkin or Jaeger on istio and configure Zipkin/Jaeger receiver on SigNoz