Adding native encoders (#71)

* Adding browser png

* Adding native JPEG & file size output

* Removing log

* Fixing blob typing

* Fix timing issue

src/codecs/browser-jpeg/options.ts

@@ -0,0 +1,3 @@
+import qualityOption from '../generic/quality-option';
+
+export default qualityOption({ min: 0, max: 1, step: 0 });