Feat: Add Exponential Backoff Utility and use it for the SSE-Session Utility

packages/stack/src/utils/index.ts

@@ -1,4 +1,5 @@
 export * from './event-emitter.js';
+export * from './expontential-backoff.js';
 export * from './ext-error.js';
 export * from './inverse-bloom-filter.js';
 export * from './memoizer.js';