chore(metrics) update codeowners file for new endpoints (#73183)

Codeowners file updated for recently created endpoints

.github/CODEOWNERS

@@ -437,6 +437,8 @@ static/app/components/events/eventStatisticalDetector/                    @getse
 /tests/sentry/api/endpoints/test_projects_metrics_visibility.py                  @getsentry/telemetry-experience
 /src/sentry/api/endpoints/organization_onboarding*                               @getsentry/telemetry-experience
 /tests/sentry/api/endpoints/test_organization_onboarding*                        @getsentry/telemetry-experience
+/src/sentry/api/endpoints/project_metrics_extraction_rules*                      @getsentry/telemetry-experience
+/tests/sentry/api/endpoints/test_project_metrics_extraction_rules.py             @getsentry/telemetry-experience
 /src/sentry/dynamic_sampling/                                                    @getsentry/telemetry-experience
 /tests/sentry/dynamic_sampling/                                                  @getsentry/telemetry-experience
 /src/sentry/release_health/metrics_sessions_v2.py                                @getsentry/telemetry-experience