return analyticsAPI and make it optional

src/Orion/index.ts

@@ -33,6 +33,7 @@ export default class Orion {
       }
       this.env = envOrConfig;
       config = {
+        analyticsAPI: envConfig?.analyticsAPI,
         referralAPI: envConfig.referralAPI,
         networks: Object.entries(envConfig.networks).map(([chainId, networkConfig]) => {
           if (!isValidChainId(chainId)) throw new Error(`Invalid chainId: ${chainId}`);