## Summary
Adds build date to `GET kbn:api/status` similar to ES. Example output
running locally:
```json
{
"name": "ES-DMVD5M3",
"uuid": "545ba70c-063e-449b-af21-6c8e7b30f77e",
"version": {
"number": "8.9.0",
"build_hash": "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
"build_number": 9007199254740991,
"build_snapshot": false,
"build_date": "2023-05-15T23:12:09.000Z"
},
...rest
}
```
### Checklist
- [x]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials
- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
## Release Note
The status endpoint now returns the build date alongside other build
information.
---------
Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
