[Response Ops][Alerting] Reusable functions for FAAD resource install…

…ation (#152849)

Resolves #152490

## Summary

This PR refactors the resource installation methods in `AlertsService`
to be reusable library functions. It exports them from the alerting
plugin and changes the rule registry resource installer to use them as
well.

## To Verify
1. Run this branch with `enableFrameworkAlerts: true`. Verify that we
can create a detection rule in the default space & a different space and
generate a rule preview. The logs should show that the rule registry
creates the resources for the preview indices and for indices in the
non-default space.
2. Verify that when running this branch on rule registry rules from
`main` or a previous version, the rules continue to run successfully.

Co-authored-by: Kibana Machine <[email protected]>

x-pack/plugins/alerting/server/alerts_service/alerts_service.test.ts

@@ -58,18 +58,16 @@ const GetAliasResponse = {
 };
 
 const IlmPutBody = {
-  body: {
-    policy: {
-      _meta: {
-        managed: true,
-      },
-      phases: {
-        hot: {
-          actions: {
-            rollover: {
-              max_age: '30d',
-              max_primary_shard_size: '50gb',
-            },
+  policy: {
+    _meta: {
+      managed: true,
+    },
+    phases: {
+      hot: {
+        actions: {
+          rollover: {
+            max_age: '30d',
+            max_primary_shard_size: '50gb',
           },
         },
       },
@@ -212,7 +210,6 @@ describe('Alerts Service', () => {
       );
 
       expect(clusterClient.ilm.putLifecycle).toHaveBeenCalled();
-      expect(clusterClient.cluster.putComponentTemplate).not.toHaveBeenCalled();
     });
 
     test('should log error and set initialized to false if creating/updating common component template throws error', async () => {
@@ -232,7 +229,6 @@ describe('Alerts Service', () => {
       );
 
       expect(clusterClient.ilm.putLifecycle).toHaveBeenCalled();
-      expect(clusterClient.cluster.putComponentTemplate).toHaveBeenCalledTimes(1);
     });
 
     test('should update index template field limit and retry initialization if creating/updating common component template fails with field limit error', async () => {