Profiling: symbolization created on user opt-in (#156089)

Signed-off-by: inge4pres <francesco.gualazzi@elastic.co>

## Summary

Include the creation of symbolizer package policy in the setup initiated
by users when they opt-in Universal Profiling.

### Checklist

- [X]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials
- [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

### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

### Related issues or PRs
* #155642
* #150885

---------

Signed-off-by: inge4pres <francesco.gualazzi@elastic.co>
Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Jen Huang <its.jenetic@gmail.com>

x-pack/plugins/profiling/server/lib/setup/steps/get_fleet_policy_step.ts

@@ -101,6 +101,35 @@ export function getFleetPolicyStep({
         ...omit(apmPolicy, 'id', 'revision', 'updated_at', 'updated_by'),
         inputs: modifiedPolicyInputs,
       });
+
+      // We add here the creation of the new package_policy for symbolizer.
+      // We create the new policy and bind it to the Cloud default agent policy;
+      // to do so, force s required to be set to true.
+      const cloudAgentPolicyId = 'policy-elastic-agent-on-cloud';
+      await packagePolicyClient.create(
+        soClient,
+        esClient,
+        {
+          policy_id: cloudAgentPolicyId,
+          enabled: true,
+          package: {
+            name: 'profiler_symbolizer',
+            title: 'Universal Profiling Symbolizer',
+            version: '8.8.0-preview',
+          },
+          name: 'elastic-universal-profiling-symbolizer',
+          namespace: 'default',
+          inputs: [
+            {
+              policy_template: 'universal_profiling_symbolizer',
+              enabled: true,
+              streams: [],
+              type: 'pf-elastic-symbolizer',
+            },
+          ],
+        },
+        { force: true }
+      );
     },
   };
 }