feat: Add JavaScript action template

https://github.com/actions/javascript-action

index.js

@@ -0,0 +1,22 @@
+const core = require('@actions/core');
+const wait = require('./wait');
+
+
+// most @actions toolkit packages have async methods
+async function run() {
+  try { 
+    const ms = core.getInput('milliseconds');
+    console.log(`Waiting ${ms} milliseconds ...`)
+
+    core.debug((new Date()).toTimeString())
+    wait(parseInt(ms));
+    core.debug((new Date()).toTimeString())
+
+    core.setOutput('time', new Date().toTimeString());
+  } 
+  catch (error) {
+    core.setFailed(error.message);
+  }
+}
+
+run()