fix: export everything from api and subscriber

Author: stanley2058

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@hackmd/y-socketio-redis",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "Scalable Socket.IO provider for Yjs using redis",
   "sideEffects": false,
   "type": "module",

src/index.js

@@ -1,4 +1,6 @@
 export * from './socketio.js'
 export * from './server.js'
 export * from './storage.js'
+export * from './api.js'
+export * from './subscriber.js'
 export * from './y-socket-io/index.js'

src/y-socket-io/index.js

@@ -1,3 +1,3 @@
 export * from './client.js'
-export * from './y-socket-io.js'
 export * from './user.js'
+export { YSocketIO } from './y-socket-io.js'