Bundles (#199)

* provide more bundle outputs

* update commonJS and es module entry to boot file

src/boost.ts

@@ -0,0 +1,2 @@
+export * from './index';
+export * from './packer';

src/index.ts

@@ -8,7 +8,6 @@ export {
   MouseInteractions,
   ReplayerEvents,
 } from './types';
-export { pack, unpack } from './packer';
 
 const { addCustomEvent } = record;