Extract playground samples from mdoc, add possiblity to run them from source

website/playground/new-samples/creating-the-editor/hello-world/sample.js

@@ -0,0 +1,9 @@
+// The Monaco Editor can be easily created, given an
+// empty container and an options literal.
+// Two members of the literal are "value" and "language".
+// The editor takes the full size of its container.
+
+monaco.editor.create(document.getElementById("container"), {
+	value: "function hello() {\n\talert('Hello world!');\n}",
+	language: "javascript"
+});