feat: als (#9749)

* feat: als

* fix: up test timeout

* fix: don't overwrite caller if it already exists

* fix: up test timeout for psql

src/als.js

@@ -0,0 +1,7 @@
+'use strict';
+
+const { AsyncLocalStorage } = require('async_hooks');
+
+const asyncLocalStorage = new AsyncLocalStorage();
+
+module.exports = asyncLocalStorage;