[Part 1/6] feat(telemetry): add rate limiter and high-water mark tracker with tests (#8110)

packages/core/src/telemetry/index.ts

@@ -50,3 +50,5 @@ export type { TelemetryEvent } from './types.js';
 export { SpanStatusCode, ValueType } from '@opentelemetry/api';
 export { SemanticAttributes } from '@opentelemetry/semantic-conventions';
 export * from './uiTelemetry.js';
+export { HighWaterMarkTracker } from './high-water-mark-tracker.js';
+export { RateLimiter } from './rate-limiter.js';