[Discover][Extension] Document Viewer

[jughosta]

• Closes [Discover][Extension] Document Viewer #184084

Summary

This PR adds extension points to Doc Viewer flyout:

• title
• docViewsRegistry.

Example:

profile: {
    getDocViewer: (prev) => (params) => {
      const recordId = params.record.id;
      const prevValue = prev(params);
      return {
        title: `${prevValue.title} #${recordId}`,
        docViewsRegistry: (registry) => {
          registry.enableById('doc_view_logs_overview');
          return prevValue.docViewsRegistry(registry);
        },
      };
    },
  },

Checklist

• Unit or functional tests were updated or added to match the most common scenarios

[jughosta]

/ci

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)

[davismcphee]

Code changes look and work great! I'll have some minor conflicts to resolve in #185905 once this is merged since I've removed example_profiles.tsx, but should be pretty straightforward. Thanks and LGTM 👍

I would like us to add some example functional tests for this once #185905 is merged though, so I'd recommend we either don't resolve #184084 until those are added, or create a followup issue specifically for the functional tests. Either way is fine for me.

[jughosta]

Thanks, @davismcphee, for the review!

I am going to add functional tests separately #186265 as this PR is otherwise delaying #175787

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 6d6a39b

Failed CI Steps

• Jest Integration Tests #6

Metrics [docs]

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
discover	809.3KB	809.5KB	+204.0B

History

• 💔 Build #216047 failed 03fba50
• 💔 Build #216011 failed eaeac3b
• 💔 Build #215984 failed b34ba8d
• 💛 Build #215798 was flaky 4f8f60f
• 💔 Build #215698 failed fcfb39b
• 💛 Build #215247 was flaky 63f7839

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @jughosta