Add keepAlive to the websocket client options (#6)

* fix: add keepAlive pings to the websocket client

* chore: 0.6.3

Author: bradens

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@codex-data/sdk",
-  "version": "0.6.2",
+  "version": "0.6.3",
   "engines": {
     "node": ">=17.5.0"
   },

src/sdk/index.ts

@@ -42,6 +42,7 @@ export class Codex {
     });
     this.wsClient = createClient({
       webSocketImpl: WebSocket,
+      keepAlive: 10_000,
       url: this.apiRealtimeUrl,
       connectionParams: {
         Authorization: this.apiKey,