[Logs+Metrics UI] Add owner properties to plugin manifest

[weltenwort]

📝 Summary

The infra plugin's kibana.json file should contain values for the owner.name, owner.githubTeam, and description fields.

✔️ Acceptance criteria

• The file x-pack/plugins/infra/kibana.json contains sensible values for the following fields:
  • owner.name
  • owner.githubTeam
  • description

🎨 Example

{
  "owner": {
    "name": "Logs and Metrics UI",
    "githubTeam": "logs-metrics-ui"
  },
  "description": "This plugin adds xyz functionality and exposes abc"
}

[elasticmachine]

Pinging @elastic/logs-metrics-ui (Team:logs-metrics-ui)