[Stack Monitoring] Add new tab on ES monitoring page to link to Ingest Pipeline dashboard

[joshdover]

Related to:

• [Stack Monitoring] Ingest pipeline monitoring #41936
• Add elasticsearch/ingest_pipeline metricset beats#34012
• Add ingest_pipeline data streams and dashboards to Elasticsearch package integrations#4597

In 8.7, we're introducing a new metricset for ingest pipeline metrics. Instead of building a custom UI directly in the Stack Monitoring app, we will be shipping a new dashboard for visualizing this data inside the Elasticsearch integration package.

In order to improve the discoverability of this new data, we should add a link from the SM pages to this new dashboard.

We also need to handle the case where the user has not yet installed the Elasticsearch package by directing the user to the integrations catalog to install it. The flow should be:

1. User clicks on tab
2. If a dashboard with ID elasticsearch-metrics-ingest-pipelines does exist, redirect to the dashboard: app/dashboards#/view/elasticsearch-metrics-ingest-pipelines
3. If the dashboard does not exist:
   1. Check if the user has access to the integrations app
      • This can be done by leveraging the start contract of the fleet plugin: deps.start.fleet.authz.integrations.all
   2. If they have access to install integrations
      1. Show a modal explaining they need to install the Elasticsearch package + a button link to call the install API: POST /api/fleet/epm/packages/elasticsearch/latest
      2. After installing, redirect the user to the dashboard
   3. If they do not have access, explain that an admin most install the Elasticsearch package to view these metrics

If we needed to cut scope, instead of directly installing the package in step 3.ii.a we could actually redirect the user to the integrations catalog to do the installation. However, this would hurt the UX by dropping in the Integrations catalog and not directing them to the integration pipelines dashboard.

Mockup

[elasticmachine]

Pinging @elastic/infra-monitoring-ui (Team:Infra Monitoring UI)

[miltonhultgren]

Related #149041