[Docs] flyte-binary helm chart is missing ServiceMonitor

### Description

Hi Team, the [instructions](https://docs-legacy.flyte.org/en/latest/deployment/configuration/monitoring.html#deployment-configuration-monitoring) for prometheus setup for flyte-binary deployment instruct people to add config properties for the microservices bundled in flyte-binary and expose an extra http port 10254 for the service monitor. However, no `ServiceMonitor` (which is the CRD object telling prometheus to pull from flyte /meterics) is included in the flyte-binary helm chart.

Requesting the addition of a `ServiceMonitor` resource to the flyte-binary helm chart to complete the prometheus metrics setup for flyte-binary. Currently, I have to create it as a template in my project.

Something similar to the flyte-core admin [service-monitor.yaml](https://github.com/flyteorg/flyte/blob/master/charts/flyte-core/templates/admin/service-monitor.yaml)

### Are you sure this issue hasn't been raised already?

- [x] Yes

### Have you read the Code of Conduct?

- [x] Yes