example: Add an example of drawing a smiley face with canvas

Adapted from https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API/Tutorial/Drawing_shapes

examples/canvas/webpack.config.js

@@ -0,0 +1,10 @@
+const path = require('path');
+
+module.exports = {
+    entry: './index.js',
+    output: {
+        path: path.resolve(__dirname, 'dist'),
+        filename: 'index.js',
+    },
+    mode: 'development'
+};