Add feature flag metadata for compliance

config/feature_flags/development/usage_data_a_compliance_audit_events_api.yml

 ---
 name: usage_data_a_compliance_audit_events_api
-introduced_by_url: 
-rollout_issue_url: 
-group: 
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/41689
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/233786
+group: group::compliance
 type: development
 default_enabled: false

config/feature_flags/development/usage_data_g_compliance_dashboard.yml

 ---
 name: usage_data_g_compliance_dashboard
-introduced_by_url: 
-rollout_issue_url: 
-group: 
+introduced_by_url:
+rollout_issue_url:
+group: group::compliance
 type: development
 default_enabled: false