Initial Worker threads/context aware support

examples/WorkerThreads.js

@@ -0,0 +1,33 @@
+/* This example spawns two worker threads, each with their own
+ * server listening to the same port (Linux feature). */
+
+const uWS = require('../dist/uws.js');
+const port = 9001;
+const { Worker, isMainThread, threadId } = require('worker_threads');
+const os = require('os');
+
+if (isMainThread) {
+  /* Main thread loops over all CPUs */
+  /* In this case we only spawn two (hardcoded) */
+  /*os.cpus()*/[0, 1].forEach(() => {
+    /* Spawn a new thread running this source file */
+    new Worker(__filename);
+  });
+
+  /* I guess main thread joins by default? */
+} else {
+  /* Here we are inside a worker thread */
+  const app = uWS./*SSL*/App({
+    key_file_name: 'misc/key.pem',
+    cert_file_name: 'misc/cert.pem',
+    passphrase: '1234'
+  }).get('/*', (res, req) => {
+    res.end('Hello Worker!');
+  }).listen(port, (token) => {
+    if (token) {
+      console.log('Listening to port ' + port + ' from thread ' + threadId);
+    } else {
+      console.log('Failed to listen to port ' + port + ' from thread ' + threadId);
+    }
+  });
+}