As we are rolling out the user profile feature, we'd like to expand the [Usage API](https://www.elastic.co/guide/en/elasticsearch/reference/current/usage-api.html) to report usage stats of user profiles such as (1) number of enabled user profiles and (2) number of user profiles that are [activated](https://www.elastic.co/guide/en/elasticsearch/reference/current/security-api-activate-user-profile.html) over the past X days. 

Response of the Usage API already contains a `security` field that groups relevant stats from security related features. We expect the new stats for user profiles should be added under it as well, for example:
```
{
  "security: {
    "user_profile": {
      "activated": 78,
      "recently_activated": 42  <1>
    }
  }
}
```
<1> The use of `recently_` is chosen to avoid the field to be tied to a specific time period so it is easier to evolve the definition in future.

x-pack/plugin/security/qa/profile/src/javaRestTest/java/org/elasticsearch/xpack/security/profile/ProfileIT.java
assertThat(users.get(0).get("uid"), equalTo(uid));
    }
    
    
    
    
    public void testSuggestProfileWithHint() throws IOException {
        final Map<String, Object> activateProfileMap = doActivateProfile();
        final String uid = (String) activateProfileMap.get("uid");
        final Request suggestProfilesRequest1 = new Request(randomFrom("GET", "POST"), "_security/profile/_suggest");
        final String payload;
        switch (randomIntBetween(0, 2)) {
            case 0 -> {
                payload = """
                    {
                      "name": "rac",
                      "hint": {
                        "uids": ["%s"]
                      }
                    }
                    """.formatted("not-" + uid);
            }
            case 1 -> {
                payload = """
                    {
                      "name": "rac",
                      "hint": {
                        "labels": {
                          "kibana.spaces": %s
                        }