Add sample script for connection

The fact that stdout could be asynchronous concerns process.exit, but it should be OK except for Windows.
nodejs/node#11568

Author: tash-2s

oneshots/connectionTemplate.ts

@@ -0,0 +1,13 @@
+import { connect } from "common"
+
+const main = async () => {
+  const api = await connect("endpoint", false)
+  api.isReady // do something
+}
+
+main()
+  .then(() => process.exit())
+  .catch((e) => {
+    console.error(e)
+    process.exit(1)
+  })