ES|QL support in Grafana Elasticsearch plugin

## Context and Value Proposition
Grafana [Elasticsearch plugin](https://grafana.com/grafana/plugins/elasticsearch/) is one of the most used plugins with Grafana. ES|QL is Elastic’s powerful query language and query engine that supports piped queries, rich support for aggregations, text processing, filtering, lookup joins, trace analytics, and comprehensive time series analytics. The lack of ES|QL support in the plugin makes it harder for users to perform those analytics in a standardized way in Grafana. We would like to offer customers the ability to execute ES|QL queries in the Grafana plugin.

## Outcomes
Enhance the plugin to support the ability to run ES|QL queries in Grafana UI on an Elasticsearch backend, and retrieve and see the results in Grafana.
provide the following capabilities:
* Base ability to execute a well formed ES|QL, get results back, and visualize in Grafana UI
* Syntax highlighting
* AST
With these capabilities, uses will successfully be able to analyze, monitor, and visualize their data including logs, metrics, and traces, via the powerful ES|QL language in Grafana.