add createOpencodeServer to js sdk and wait for readiness. always use random port for opencode serve. add /client and /server imports for js sdk

tsconfig.json

@@ -1,5 +1,9 @@
 {
   "$schema": "https://json.schemastore.org/tsconfig",
   "extends": "@tsconfig/bun/tsconfig.json",
-  "compilerOptions": {}
+  "compilerOptions": {
+    "customConditions": [
+      "development"
+    ],
+  }
 }