feat(core-shared): wire IMetrics into DI bindings

packages/core-shared/src/instrumentation/index.ts

@@ -9,8 +9,10 @@ export type {
   Breadcrumb,
   CaptureContext,
 } from "./logger.interface";
+export type { IMetrics, MetricAttributeValue } from "./metrics.interface";
 export { NoopTracer } from "./noop-tracer";
 export { NoopLogger } from "./noop-logger";
+export { NoopMetrics } from "./noop-metrics";
 export { withSpan } from "./with-span";
 export { withCapture } from "./with-capture";
 export { isReported, markReported } from "./reported-flag";