Add telemetry for extension host is detached

<!-- ⚠️⚠️ Do Not Delete This! feature_request_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- Please search existing issues to avoid creating duplicates. --> <!-- Describe the feature you'd like. --> Add telemetry for extension host disconnect runner status. Add telemetry when the renderer disconnected. Add telemetry when the extension host socket is closed. Add telemetry when extension host is ready. Add telemetry for extension host reduced grace time. Add telemetry for extension host unhandled errors and termination.