Google Cloud Monitor: Prom query editor (#73503)

* revert

* works but needs clean up and tests

* clean up

* remove any

* change confusing query var to expr

* oops

* add test

* lint

* cleanup

* update docs

* Update public/app/plugins/datasource/cloud-monitoring/components/PromQLEditor.tsx

Co-authored-by: Andreas Christou <andreas.christou@grafana.com>

* nit

* lint fix?

* remove comment from cue

* go linter

* removing parsing stuff parseresponse func

---------

Co-authored-by: Andreas Christou <andreas.christou@grafana.com>

packages/grafana-schema/src/raw/composable/googlecloudmonitoring/dataquery/x/GoogleCloudMonitoringDataQuery_types.gen.ts

@@ -22,6 +22,10 @@ export interface CloudMonitoringQuery extends common.DataQuery {
    * Time interval in milliseconds.
    */
   intervalMs?: number;
+  /**
+   * PromQL sub-query properties.
+   */
+  promQLQuery?: PromQLQuery;
   /**
    * SLO sub-query properties.
    */
@@ -43,6 +47,7 @@ export interface CloudMonitoringQuery extends common.DataQuery {
  */
 export enum QueryType {
   ANNOTATION = 'annotation',
+  PROMQL = 'promQL',
   SLO = 'slo',
   TIME_SERIES_LIST = 'timeSeriesList',
   TIME_SERIES_QUERY = 'timeSeriesQuery',
@@ -189,6 +194,24 @@ export interface SLOQuery {
   sloName: string;
 }
 
+/**
+ * PromQL sub-query properties.
+ */
+export interface PromQLQuery {
+  /**
+   * PromQL expression/query to be executed.
+   */
+  expr: string;
+  /**
+   * GCP project to execute the query against.
+   */
+  projectName: string;
+  /**
+   * PromQL min step
+   */
+  step: string;
+}
+
 /**
  * @deprecated This type is for migration purposes only. Replaced by TimeSeriesList Metric sub-query properties.
  */