chore: export baggage

Author: dyladan

src/index.ts

@@ -15,6 +15,8 @@
  */
 
 export { baggageEntryMetadataFromString } from './baggage';
+export * from './baggage/Baggage';
+export * from './baggage/Entry';
 export * from './common/Exception';
 export * from './common/Time';
 export * from './diag';