Check for cluster connection
Check for cluster health

Returns responsetime along with success/warning/failure.

Uses elasticsearch-php package
- Supports both v7 and v8 as both ES versions are still supported by Elastic

Signed-off-by: Bram Leeda <[email protected]>

…uster health status

Signed-off-by: Bram Leeda <[email protected]>

Add extra assertions for the ElasticSearch check result data

Add new ElasticSearch check

Signed-off-by: Renovate Bot <[email protected]>

| datasource | package     | from   | to    |
| ---------- | ----------- | ------ | ----- |
| packagist  | vimeo/psalm | 4.30.0 | 5.1.0 |


Signed-off-by: Renovate Bot <[email protected]>

…structors

This mostly replaces many docblock-only union types with PHP 8 union types (now usable),
and removes many `Traversable` inputs where unusable.

Specifically, in order to operate properly, many of these checks do things like
`$this->settings[0]` or `count($this->settings)`, even in happy path scenarios,
leading to invalid execution.

This means that the accepted input type is not `array|Traversable` for many of our checks,
but rather `non-empty-list` or stricter.

While this could potentially mean that this is a BC break, these checks did **NOT**
work, when a `Traversable` was given as input, and the errors change from being an
`Exception` to being a more specific `TypeError`.

Tests verifying impossible types/scenarios have been removed.