[ResponseOps][Alerts] Implement platform alerts grouping components (#…

…184635)

## Summary

Adds solution-agnostic components to create hierarchical alerts grouping
UIs, adapting the original implementation from Security Solution.

Closes #184398 

## To Verify

For existing usages of the `@kbn/grouping` package: verify that the
grouped UIs work correctly (Security Alerts, Cloud Security Posture).

New alerting UI components: checkout
#183114 (PoC PR), where the
updated `@kbn/grouping` package and these new components are used in
Observability's main Alerts page.

### Checklist

- [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

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Gerard Soldevila <gerard.soldevila@elastic.co>
Co-authored-by: Vadim Kibana <82822460+vadimkibana@users.noreply.github.com>
Co-authored-by: Alex Szabo <alex.szabo@elastic.co>
Co-authored-by: Tre <wayne.seymour@elastic.co>

.github/CODEOWNERS

@@ -28,6 +28,7 @@ x-pack/plugins/alerting @elastic/response-ops
 x-pack/packages/kbn-alerting-state-types @elastic/response-ops
 packages/kbn-alerting-types @elastic/response-ops
 packages/kbn-alerts-as-data-utils @elastic/response-ops
+packages/kbn-alerts-grouping @elastic/response-ops
 x-pack/test/alerting_api_integration/common/plugins/alerts_restricted @elastic/response-ops
 packages/kbn-alerts-ui-shared @elastic/response-ops
 packages/kbn-ambient-common-types @elastic/kibana-operations

.i18nrc.json

@@ -59,6 +59,7 @@
     "flot": "packages/kbn-flot-charts/lib",
     "generateCsv": "packages/kbn-generate-csv",
     "grouping": "packages/kbn-grouping/src",
+    "alertsGrouping": "packages/kbn-alerts-grouping",
     "guidedOnboarding": "src/plugins/guided_onboarding",
     "guidedOnboardingPackage": "packages/kbn-guided-onboarding",
     "home": "src/plugins/home",

package.json

@@ -163,6 +163,7 @@
     "@kbn/alerting-state-types": "link:x-pack/packages/kbn-alerting-state-types",
     "@kbn/alerting-types": "link:packages/kbn-alerting-types",
     "@kbn/alerts-as-data-utils": "link:packages/kbn-alerts-as-data-utils",
+    "@kbn/alerts-grouping": "link:packages/kbn-alerts-grouping",
     "@kbn/alerts-restricted-fixtures-plugin": "link:x-pack/test/alerting_api_integration/common/plugins/alerts_restricted",
     "@kbn/alerts-ui-shared": "link:packages/kbn-alerts-ui-shared",
     "@kbn/analytics": "link:packages/kbn-analytics",

packages/kbn-alerts-grouping/README.md

@@ -0,0 +1,3 @@
+# @kbn/alerts-grouping
+
+Platform components to create hierarchical alerts grouping UIs

packages/kbn-alerts-grouping/index.ts

@@ -0,0 +1,11 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+export { AlertsGrouping } from './src/components/alerts_grouping';
+export { type AlertsGroupingProps } from './src/types';
+export { useAlertsGroupingState } from './src/contexts/alerts_grouping_context';

packages/kbn-alerts-grouping/jest.config.js

@@ -0,0 +1,14 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+module.exports = {
+  preset: '@kbn/test',
+  rootDir: '../..',
+  roots: ['<rootDir>/packages/kbn-alerts-grouping'],
+  setupFilesAfterEnv: ['<rootDir>/packages/kbn-alerts-grouping/setup_tests.ts'],
+};

packages/kbn-alerts-grouping/kibana.jsonc

@@ -0,0 +1,5 @@
+{
+  "type": "shared-browser",
+  "id": "@kbn/alerts-grouping",
+  "owner": "@elastic/response-ops"
+}

packages/kbn-alerts-grouping/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "@kbn/alerts-grouping",
+  "private": true,
+  "version": "1.0.0",
+  "license": "SSPL-1.0 OR Elastic License 2.0"
+}