Implement fs module (#3)

* Implements the fs module

* Add stats object

* Add not implemented to createWriteStream

* Update mkdtemp to use tmp dir

* Unexport Stats

* Add client web socket for commands and restructure

scripts/test-setup.js

@@ -0,0 +1,3 @@
+global.requestAnimationFrame = (cb) => {
+	setTimeout(cb, 0);
+};