Export offline handler types (#166)

Author: rolodato

index.ts

@@ -9,6 +9,11 @@ export {
   Flagsmith,
 } from './sdk/index.js';
 
+export {
+  BaseOfflineHandler,
+  LocalFileHandler,
+} from './sdk/offline_handlers.js';
+
 export {
   FlagsmithConfig
 } from './sdk/types.js'